I think it's largely the same party as it was during the Bush I years, although I would agree Bush I is one of the last of the old breed and it was apparent he wasn't super comfortable with the new style of republicans emerging at the time.
Perhaps this is nuanced and less apparent to outsiders, so that might explain the perception other nationalities might have of our current Republican Party being anything different than it's been since the 70s. No, they've just gotten more bold and less subtle in their party branding, dogwhistles, and jingoism. Same party, it's just adapted to the internet age.
I disagree since the party has changed and to you that may not be obvious because one of the largest changes was how it involves the rest of the world. The party started to push anti NATO stuff and that has huge implications (what can be seen clearly due to recent events). They also started to spread anti-vax stuff openly around the world. Plus with Jan 6 riots they really opened the Pandora's box for the whole world to see. They started to leave agencies of UN. They are now also more active in blocking various global initiatives in the terms of environment and development. Etc Etc. I am sorry but the party has indeed changed by a decent extend. The change perhaps isn't permanent or complete regarding all members/voters but it is there. How the party relates to the world has objectively changed.
Well, it's also been a popular media narrative. If they're consuming any American media to learn what's going on, they might have picked it up there.
While this line from Julius is pretty US minded and here I will expand on my last post. Since complex argument can be made.
Today there should be something like 7600 million people living outside of USA. Therefore almost all of these people have their own local media houses which they follow (and they report live from USA with their own journalists). Therefore people outside of US don't have to watch US media to get served something that is Anti-trump. Those media don't even have to parrot US media since they can just explain how the guy negatively effects your life even if you live far away. From climate change, flirting with your regional dictators, toying with democracy in one of the most important democracies in the world, his anti-vax stuff that are spreading across the internet and which can kill your family members or friends ... etc. There is no need to parrot US media since there is more than enough ammo just if you observe from your local perspective. You open left wing news, centrist news, right wing news and you get to see anti-trump stuff on regular basis. What in the end harms the US and the party. Especially since today you can just ask people In US what the hell is going in US and through that you effect political landscape. Not to mention buying of American goods, the guy is natural anti-commercial for many .
Plus there is open question of why would that many foreign people even watch US media all that much. Since in them socialized medicine is rated as a radical idea that will never work. Therefore if you have socialized/affordable medicine your whole life then every normal person would start to ask themselves "What the hell I am watching ?". Especially if you are from one of those developed countries where already your grand, grand mother got to experience the system, which it is still working. I mean this is just an obvious example but it is possible to make this case that really questions the content in various spheres. This is exactly why there is discomfort that US will fall out of the loop with rest of the developed world. Democrats aren't great but modern Republicans evidently are working towards that outcome. Watching US media usually only makes sense in a way that you want to see what is being served to the people there.
So now the bottom line:
There is plenty of anti-trump sentiment outside of USA even in democratic nations since people there are convinced that he will mess up completely American democracy and various vital social systems. What means that their countries will have to let US go. However if that happens it will be a challenge to control China and it's growth since China already has a network and satellites across the globe. Therefore messing up of the USA simply opens them many doors. Dysfunctional or self focused USA is simply something that is evidently helping China a lot in spreading across the world. In US all of these policies can perhaps pass as average conservatism but the real question is how much of it can help China (through limiting development/education and general dysfunction). What in the end means he is harming the country and the party, how many voters he got isn't a real measure. Since through history many have followed the strongman but the problem with that didn't fully become obvious before it was too late. Therefore it is possible to get into anti-Trumpism without even paying much attention to US sources on the issue. Since here there is a certain toying with the foundations of the democratic world order which can be seen and felt from far away. However you don't need US media to understand that. That can be explained by the thousands of media houses that operate outside of USA.