This is true, but not a defence of Apple's behaviour. To be clear I don't think chromium is a panacea either, but Apple has not exactly been webkit's friend and

This is true, but not a defence of Apple's behaviour. To be clear I don't think chromium is a panacea either, but Apple has not exactly been webkit's friend and is only keeping a 3rd player barely alive as a side-effect. They are both bad in opposite ways. If webkit was liberated from Apple I think it would ultimately benefit chromium as well.