DNS resolvers getting sued should stop resolving domains/properties of the companies suing them too when they are forced to take these kinds of actions/steps off the back of a legal decision like this.
While I agree in spirit, this also makes the resolver away from being able to claim they're just a neutral service which just delivers existing records without being opinionated
Obviously
The problem is that these types of companies are started by naive idealistic techs who only know how to play by the rules and can't figure out why people would misuse their products
They were very well described by the "rubber hose crypto" XKCD
(Not that I don't think a DNS company stays at the same level of complexity - both legal and technological - as a VPN company, but still)
This would hurt their users by making their DNS services less useful than competitors.
Hopefully the leadership of public resolvers isn't as a childish as you are.
That kind of action would penalize their users far more than it would hurt the evil corporation that slighted them. Not to mention they'd lose users. People who choose quad9 likely aren't too keen with DNS tempering.
But yeah, take that sony-or-whatever!
Keep resolving, but instead of resolving multiple A records, resolve just one. Fuck that one server in particular.
Delay updates by 1 week.
Answer randomly with the up-to-date or the out-of-date records.