- It's hypocritical. Liberals tend to think ISPs should be obligated to follow Net Neutrality is based on the principle of freedom of speech. Also the only reason they are OK with say Alex Jones discussion being banned is that they disagree with/don't like Alex Jones.
- Banning discussion of certain topics is not the same thing as moderating posts that you already said weren't allowed in your ToS
- Websites like Facebook, Twitter , Youtube, and Instagram have become social media monopolies. Because of this they should have fewer rights as "private businesses", and I think in any other situation liberals would agree with this (Citizens United for example)