Giraffe
The men can be feminists thing is far from decided across all feminism. It's a matter of personal judgement. Perhaps the analogy with racism is apt. Have you ever seen the South Park episode where Token tells Stan he just doesn't get it? He doesn't get what it's like to be a black person and called the n word because he's not black. And that's the point. White people don't know what it's like to have been born into a legacy of slavery, prejudice, oppression and sub-human status based on skin colour and to still be dealing with the after-effects of that to this day and need to respect that.
Similarly, men don't know what it's like to be born into a legacy of oppression and sub-human status based on genitalia and still be dealing with the effects to this day. So this is, IMO, why some feminists don't think men can be feminists, only allies. They don't get it.
There's also plenty of stuff about men taking over any space they're in, hogging the limelight, talking over women and so on. Feminism is a movement for women by women and needs to be led by women, not men (who don't get it). You may disagree and that's cool. I think it really does depend on your own definition and understanding of feminism.
(I can't resist, I am sorry, but Muphry's Law applies to your post in points 5 and 6
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