Projects team and devs started behaving this way when hunters started cheating by creating multiple accounts and getting caught through wallet pooling. This has destroyed the credibility of the innocent ones. I do believe alot of projects are taking advantage of this to not pay even the good ones which is unacceptable. Escrow has helped with this but still team has the last say when it comes to distribution. It's good that bounty managers are also filtering out cheaters to minimize such act.