Now with AI-generated spam everywhere, maintainers have even more reason to be suspicious of unknown names. Vouch solves their problem, but think about what it means for someone trying to break in. You need someone to vouch for you before you can contribute, but how do you get someone to vouch for you if you can't contribute?
I get why maintainers need this. But we're formalizing a system that makes OSS even more of an insider's club. The cold start problem doesn't really get any warmer like this.