Now imagine if every hosting provider and internet provider had the same policy, such that it was essentially impossible to discuss many viewpoints and ideas via the internet (which is the best - arguably even the only - avenue most people have to disseminate their views to a wider audience). That pretty substantially restricts the kinds of speech that can actually be communicated effectively. Indeed, part of the reason why hosting providers are under such pressure to have anti-hate-speech provisions is because it will make disseminating those views difficult.