Here's an example of what some of the ENFJs I know do, and maybe these individuals aren't the most well-rounded, and maybe it's coincidence that they are ENFJs and do this, but either way, this is not an isolated incident:
ENFJ friend comes to visit me. I suggest a really nice, well-known art museum, among other ideas of things to do. I tell him it's his choice, and I'm happy to do whatever (cuz I live here & go to these places all the time). He chooses the art museum and says he likes art. Then I visit him...he takes me to an art gallery. He seems genuinely interested in the art. I have been given the distinct impression that this ENFJ has some appreciation for art, even if it's not a major interest of his (like it is mine).
Later, I overhear a conversation with that ENFJ & someone else:
Guy: What did you guys do today?
ENFJ: We went to an art gallery.
Guy: Honestly, I cannot stand art. I think it's ridiculous and stupid.
ENFJ: I don't really like it either. It's not my thing.
I've had people tell me they don't like art and I just smile and say "hm", but I'm not going to agree with their view when it's not mine...
Unless this ENFJ was putting up a front to impress me....
In any case, this is behavior I have noticed at times in all the ENFJs I know. Yet, other times, I see them stick to their guns. So maybe they do this when a topic is not particularly important to them? That's when they pull the chameleon trick....?