I think I recall in a recent stream, Geno was referring to Chris as "he" and when people were shitting up his chatbox about it, he said Chris didn't mind it and pointed out to a tweet or post Chris made saying he didn't care what pronouns he was referred to, as long as he was called Christine or something. So, I'm guessing, for videos, he feels the need to use the "proper pronouns" because he has a more sizable audience doesn't want retards asking too much about it, as stated in the above post if he doesn't comply to the tranny zealots.
It's even funnier because more recent Chris-centric videos by other rando commentary channels have just been calling him "he" and so do the comments. Even the Reddit for Chris shit lets people call him whatever, which is surprising considering it's Reddit.