I use Google Voice for all my mobile needs. I give it out to every service that asks for my mobile number, and then, if they give it out to spammers, I can easily filter them out.

But I can't use my GV number for Twitch - it reports "only mobile phone numbers may be used".

I do not give out the number that goes to my SIM card. It's not necessarily going to be the same number if I switch providers, and literally every text and call I get through it and not GV is spam, because I never give it out.

Since people are starting to use "verified accounts only" on their chats, this has suddenly gone from "that's annoying" to "this is preventing me from participating in communities". And I don't think the streamers are wrong for using the filter, because I've watched what happens if they don't, so I'm not going to try and convince them to change it.

Perhaps GV allows you to get new numbers too easily, and all the other services I've used it with such as [checks notes] Amazon Web Services are inundated with people using fake GV numbers.

But I don't think that's the case, presently.