Why do you think it would be impossible to vet people? Publishers vet the developers they work with all the time.

Edit: Upon re-reading, I actually missed this paragraph the first time.

> Membership will grant you access to a private Discord channel with other members, access to the aforementioned business resources, and possibly more benefits down the line. We have other ideas for Foundation activities, but we don’t want to distract ourselves from our primary goal as we get the Foundation off the ground.

It sounds like you get the publisher-like services in exchange for paying them. So in that sense they probably don't care if you're vetted because you're giving them money? Assuming the membership fee is sufficiently large. They are also talking a lot about "community", in-person meetings, etc. so I assume a close relationship is expected, though.