How exactly would they have cause to sue? “I wasn’t able to wank, so I was harmed.”

Unless these are paying customers? But in that case, the ToS likely explicitly says PH has the right to pull access for any reason, or a specific list of reasons.

A company like PH has lawyers, guaranteed. They wouldn’t be making these moves if they weren’t absolutely certain they were covered legally. It’s not like it’s a mom and pop porn shop.