You've most certainly seen it to be applicable. The issue is, the most arrogant people are always the loudest. People who claim to be feminist, but are terfs or misandrist usually garner the most negative attention and people start to only believe that feminism only means that thing. Feminism isn't very eye catching. People who are it don't scream at the top of their lungs.

Feminism is more widespread than you might believe too. Cause it's really really simple. Women and men are equal, deserve equal rights and for the majority of examples, can perform the same tasks.

Equality doesn't mean equal treatmeant, but equal outcomes. Obvious black and white examples like men don't need cervix screening.

There are more nuanced things too, like homeless rates, suicide rates, career opportunities, sexual assault victims, education graduation rates, family court biases etc. All things that require nuanced attention between the sexes, and aren't easy to get right.

99% of feminists are just your every day person, wishing for a more equitable world. There's fringe parties of every socially political movement. I've kind of always wished there was a slightly more balanced name, but the movement started from the suffragettes, so it makes sense from a historical stand point.