I did not state "all feminists are Jews" or even "all the most prominent feminists are Jews". I stated that feminism is Jewish. It's different.
I think our disconnect here is that you may be a liberal who considers an ideology as being the sum of individual contributions; for me on the other hand an ethnicity has a cultural character, and therefore certain ideologies and world outlooks can be assigned to (and therefore claim that they come from) the ethnicity as a whole.
You need to look at the culture of a people, not at the individual contributors. A list of non-Jewish feminists means very little, even because it could easily be that the vast majority on that list are either cryptojews or married to Jews or pupils to Jews. But even if the majority of feminists were not Jews, that would not disprove my statement because feminism still comes from and is part of Jewish culture and it's not part of the traditional European culture.
But it is entirely Jewish. It doesn't just have "strong Jewish influences". It is Jewish.
The claim that feminism is Jewish does not rest solely on a ratio of how many important feminists were Jewish themselves, although it is overwhelming if you take into account the population.
The most important thing is that the feminism comes from Jewish culture: a culture where women are cattle and in a conflictual relationship with men, due to the Jews not having the concept of love. It makes perfect sense for a Jewish woman to be a feminist, but this ideology is completely alien to European culture where a man and woman form a family based on love and mutual affection.
Your post is very reasonable. However, you need to consider that we're talking about a meme. A meme is a form of communication that is intrinsically snappy, hyperbolic, and due to its format it can only give you a little nugget of information. A redpill, if you will. Its purpose is to trigger curiosity and prompt the viewer to do further research.
The Jewish question is an extremely complex topic, that will take you through politics, history, philosophy, and religion. You cannot expect a single meme to convince you of even a small aspect of the Jewish question. To acquire true knowledge, you must read books.
I really want to emphasize this point. One is not going to be able to understand how the world works by looking at memes, or even having discussions in this forum. The true source of knowledge must come from reading books. The forum is useful to refine arguments, check understandings, and have directions on what to research next; but it cannot be sufficient. I can tell quickly if I'm talking to someone who has opinions formed by reading books or if I'm talking to someone who only has a superficial knowledge acquired in online forums.
So while what you are saying is correct in a literal sense, in practice I think you're being too harsh in judging a meme. You wouldn't expect to learn everything about a topic by reading e.g. a newspaper article, would you? The claim of the meme "every single aspect of feminism is Jewish" is correct; it just doesn't have enough space to completely argue the case. That's up to the viewer to do his homeworks.
And in case you're wondering, here's a good reading list to understand the Jewish Question. For example, the full explanation of the claim "Jews have opened the floodgates to mass immigration" is in the book The Culture of Critique. I'm afraid you'll need to read the whole book to understand the justifications for that statement; I can't put the content of a whole book into a meme.