I don't understand why bitcoin is afraid of hardforks. Ethereum hard forks like there is no tomorrow, and so far the number of major block-chain-splits is equal

I don't understand why bitcoin is afraid of hardforks. Ethereum hard forks like there is no tomorrow, and so far the number of major block-chain-splits is equal, two. The offical implementation not forking does by no means prevent anybody else from hardforking to begin with, Bitcoin cash demonstrates.