Dating back to the days of satoshi, the consensus would reject blocks that did not fit its rules. That way some node can't just make up its own rules. Rather t

Dating back to the days of satoshi, the consensus would reject blocks that did not fit its rules. That way some node can't just make up its own rules. Rather than join a P2P network of nodes with wrong rules Core added code to not connect to nodes that give you blocks that violate consensus. It's not controversial but the anti-core forces have nothing of substance so they make up drama.