I think some of the problem here is that social media relies on negative, combative expression as click bait. As a result there is a negative spiral downwards where that poster might have seen some extremist "feminist" video shorts because that's how they can get views, and then she responds with the same filtering process with increasing cherry picking and extremism.
I have seen some unreasonable memes that are supposed to represent feminism, but warping away from the actual principles. One that stuck in my mind from FB said, "Imagine what the world would be like without any men", and then women responded with how they would go on walks at night without fear, wear more sexually provocative clothes on walks, etc. While my understanding is that there are higher statistics of physical assault from men, I would personally not feel safe walking alone at night with only women in the world. I've seen plenty of female violence and recently crossed the street instead of passing a woman (it's my rule to avoid crossing paths with any strangers) and she started laughing manically, and I realized she was drugged out of her mind, so I was glad I kept a distance. I also saw really violent fist fights between girls in 7th grade through high school. Some people are being unreasonable in a "feminist" position and it is a problem for people who care about the actual principles of equality.
I feel like it's getting worse. Before coming here I checked youtube and most of the channels I was following have gotten worse in the past couple of months. They are less reasonable and more combative.
I recently watched an analysis of social media that describe how it relies on negative, combative communication and tends to filter and exaggerate those qualities. That particular video represents many qualities social media filters for in terms of look, content, style, etc. Basically speaking in the snarkiest tone possible with stuffed animals in the background and wearing heavy makeup.