That was me and the more I learn and talk to other vtubers it's 99% now and most are married with a kid. Yes even those girl failures. People say kayfade is dead in western vtubers but that's because viewers are buying the kayfades.I remember reading one vtuber saying around eighty percent of chuubas are in relationships. I don't know if that's true or not, but not mentioning your boyfriend on-stream makes sense when your career and income take a big hit if you do. A lot of people that are single don't want to hear about how great the relationship you're in is, even if they're not "unicorns".
I could believe a lot of chuubas are playing up how they can't get a date or aren't in the dating pool or whatever. Doesn't seem that inconceivable or impossible to me.