(Not really. It could also apply to people who write canon characters, but not from Hoyo's games (Genshin, Honkai, Zenless Zone Zero). Things could have changed, but crossovers were a rare occasion when I was still around.)

(As someone who used to RP on Twitter's side of the Genshin verse: If you aren't a canon Hoyo character, you would be VERY lucky if the community decides to look in your direction.)