> the solution I liked the best was the linux "developers take full responsibility" approach.

The people who can realistically submit a Linux patch that will ever get looked at is already a super select group through who-you-know network effects.

You can't apply the same system to random open source projects, the best option for people that run random small to medium sized open source projects is just to ban all unsolicited PRs, otherwise you're going to spend way too much effort sorting through the slop.

I don't think that is true at all, I'm just a random FOSS dev with no connection to the Linux kernel community and I have gotten two small commits into the Linux kernel.