Roku disables players and TVs with attempt to coerce arbitration agreement

So today is 3/2 and up pops the notice to accept updated terms & conditions.   I actually read things so the only thing changing is what you have to do in order to sue them.  Fine T&C change however the effective date was 11 days ago (Feb 20th).

Considering they have the ability to push the T&C updates out electronically I'm wondering why this is retroactive.