It's not that easy. Major changes / rewrites for quality are not that rare. Minor changes could also break the system by injecting false information. And even i

It's not that easy. Major changes / rewrites for quality are not that rare. Minor changes could also break the system by injecting false information. And even if you could automate this, it still takes time / effort continuously, because people who really care will adapt. Any protest like that will affect SO's ability to do other things they care about.