@Escheron
Let's see.
Puchineko/Yuzuko's thing is that she is a idle talk-calls everyone master type. Kind of embarrassing, I would assume. Additionally we have been alluded to that some creep is probably gonna stalk her. Having people know who she is could be dangerous.
Sweet Macron/Sora is a VR dancer. Not entirely a big deal, but she obviously has a low self esteem (despite her skills) that she hides with virtual models. Hers is more personally like an escape than an embarrassing thing.
White Crow/Aruvina is a chuunibyou streamer who acts all edgy. Outside of that, he is a really popular and athletic dude. Having people know he is a sulking dark edge lord could probably hurt his social life
Bat/Souta is a crossdressing streamer. Same thing as the other guy, where it could possibly make his social life hell if people found out.
And Usagidon is a student council type who wants to be the next school head mistress. If people found out she was livestreaming and acting like a mob boss, it would probably dash her career.