I don't think it's a China thing at all, if they launched this correctly in the west it would be just as popular in a few years. Lonely men exist everywhere.
Hololive does, one Hololive's mainstay, Zatsudan (Free Talk) is basically radio talk show with the interviewer being (you) the live audience. And I admit I use some Vtuber streams as replacement for impossible-to-do physical hangout in this year of pandemic.