The word "blocking" is used in the article by the plaintiff, but the actual issue at hand was throttling that the plaintiff perceived as blocked traffic. Even then the lawsuit wasn't about throttling either, but fraudulent advertising.
Blocking was an issue in the discussion, and its been an express concern (and directly, and separately from throttling and prioritization, been addressed in regulation) in each iteration of the FCC's Open Internet rules, which have all addressed both blocking of lawful content and blocking of lawful applications.
The idea that the ability of the ISPs to censor has not previously been an issue in the neutrality debate is utterly wrong; its been a central concern identified and addressed in each public draft and issued version of the FCC's net neutrality rules.
The word "blocking" is used in the article by the plaintiff, but the actual issue at hand was throttling that the plaintiff perceived as blocked traffic. Even then the lawsuit wasn't about throttling either, but fraudulent advertising.