Jeesh, you're far down the "red pill" rabbit hole huh?
Yes, it's a conversation. We are having one right now. Sexual identity, gender identity, potato, potato. I don't mean sexual orientation. They are talking about what constitutes the masculine and being male. Didn't someone like Prince or Bowie broaden the term masculinity or manliness in a lot of ways? I mean those two dudes were wearing makeup and high heels, very effeminate, and they pulled A LOT of tail. Still the world didn't end and we are not all wearing high heels.
Aggressiveness has always had primarily negative connotations, but it depends on the context.
Who are "they" and exactly which control do "they" have over your life? This is what I don't get. I don't give a fuck what anyone says, I have my own way of being masculine. If someone says that I shouldn't do violent sports, chase tail and be assertive, then I say GTFO, and if someone says that I shouldn't be supportive of LGBT rights, shouldn't be compassionate and should feel threatened by "PC culture" , then I say GTFO too. I know you are worried, but I am honestly not. You are playing right into the identity politics that you hate. Don't worry bud, we are plenty of people who like embrace the same manly qualities as you. If a few other people do not, the sky wont start falling down.