Lmao yep that's me. Couldn't be that I just feel weird about copying around threads where people share pictures of their buttholes, ask for help escaping from abusive partners, or seek support on embracing their genders and sexualities without the permission of the original author. Reddit is more than just memes, video game tips, in-depth analyses on a variety of questions by historians and scientists, and celebrities advertising their newest ventures under the guise of AMAs. And therefore commensurate thought should be put into it before saying "yes this is all my information to do whatever I want with."
On a separate note, I stopped using Twitter in 2018 partially because I was tired of every single conversation jumping right to "Russian bot" accusations. Didn't matter what your opinion was, if someone disagreed with it, you were a Russian bot sent to sew chaos and division. I've been happily on the fediverse since then and sincerely hope I'm not now in for a wave of seeing "are you employed by or otherwise affiliated with reddit or meta you have to answer or this is entrapment" bs.
Yes, as long as the two instances in question are federating with one another, then posts and comments are all federated.