Yup, they are trying to establish easy precedence. Quad9 has not enough funds to battle the suit, even tough they are probably the least guilty party.
Targeting DNS services is an interesting strategy, but if you know how the technology works it's also a silly one. Attacking those who only translate your request to access a site hosting copy righted content instead of the operator or host... or users for that matter.
That's like what, 2% of online users globally? Let's say pirates are marginally more tech savvy, so maybe 10% of pirates? If their plan works and they can get google to block access to all sorts of streaming and torrenting sites, that will massively reduce the numbers of people accessing illegal content.
Targeting DNS and killing traffic to an entire site is easier than the constant drumbeat of sending out takedowns for specific links to everyone. Way pver the top, and pf course they wouldn't try it against a big opponent. Would love to see them make a case that YouTube should be globally DNS blocked, after all look at all the infringing videos and music that's on there daily.