Or the "good" people aren't that good at all (both as humans and coders) but use the project to form coalitions, gain power and land jobs way beyond their capab

Or the "good" people aren't that good at all (both as humans and coders) but use the project to form coalitions, gain power and land jobs way beyond their capabilities. And gang up on prolific contributors in the process, not overtly, but using the method of a thousand cuts and lies. Until the prolific contributor explodes in righteous anger and the "good" people have "proof" that he is a bad person. Politics 101.