On the one hand, yes. On the other hand, I don't want to be constantly worried about my own reputation.
That is why you must think carefully who you vouch for. Like in a house party. If you bring someone who does not act well, it reflects bad on you.
Ultimately, a shrinking contributor pool is the inevitable consequence of code generation being virtually free.
How many people do you envision the average person vouching for? If it's less than 3, that's a problem.