Everyone is different. Some people who are non binary but lean/present as feminine might use feminine words, but others I’ve seen use the masculine because they think modifying the grammar is complicated.
I personally use the gender-neutral modified language, like using elle in Spanish.
Yeah, I quite like “what’s up my man?”, but I’m not a fan of “this man”.
I generally enjoy feminine stuff as well, simply because it’s different, but I prefer neutral.
For the languages I’m learning:
Spanish, I generally prefer terms like elle (they), amigue (friend, gender neutral), etc.
Similarly, elu with Portuguese
Dukaisms with Polish
And hen for Norwegian
I’m fine with “my man” now :)
In 2021, I struggled with intense dysphoria which caused me to feel bad every time someone mentioned things like male parts, or gendered language.