There are conflicting definitions of feminism between feminists, as your observation re: male feminists demonstrates. See intersectional feminists vs. trans-exclusionary radical feminists(TERFs). Or second vs third wave(which is part of the previous conflict), etc.
Yes, I suppose. But please demonstrate sources, because it seems clear that you aim to bring in radicals (TERFs) as a way to derail the conversation.
No surprise. But no less disgusting.
From wiki, on TERF:
TERF (/ˈtɜːrf/, also written terf) is an acronym for trans-exclusionary radical feminist. The term was coined in 2008.[1] It was originally applied to a minority of feminists espousing sentiments that other feminists consider transphobic, such as the rejection of the assertion that trans women are women, the exclusion of trans women from women's spaces, and opposition to transgender rights legislation. The meaning has since expanded to refer more broadly to people with trans-exclusive views who may have no involvement with radical feminism.[2][3]
Those referred to with the word TERF typically reject the term or consider it a slur; some identify themselves as gender critical.[4] Critics of the word TERF say that it has been used in insults and alongside violent rhetoric.[5][6][7][8] In academic discourse, there is no consensus on whether TERF constitutes a slur.[7][8][9]
From wiki, on Pro-feminism:
Some feminists and pro-feminists believe that it is inappropriate for men to call themselves "feminists". This argument takes a variety of forms, including the following:
Feminism is a movement and a body of ideas developed by, for, and about women.
Men can never fully know what it is like to be a woman.
By calling themselves feminists, men could pre-empt and take over the feminist movement, thus stifling women's concerns and voices.[18]
From wiki, on Third-wave feminism, the section entitled "Relationship with second wave"
The second wave of feminism is often accused of being elitist and ignoring groups such as women of colour and transgender women, instead, focusing on white, middle class, cisgender women. Third wave feminists questioned the beliefs of their predecessors and began to apply feminist theory to a wider variety of women, who had not been previously included in feminist activity.[37]
Please note I did not derail anything, nor did I do anything that warrants a claim of "disgusting".