I agree, it's a really dumb law but I'm not sure their angle of approach is the right one. I'd go after the privacy aspect of requiring adults to submit their government ID and reveal their porn tastes to the government, huge breach of privacy. But they went with:
Plaintiffs argue the new laws violate free speech rights and place a huge burden on content creators, who are being tasked with gatekeeping their own material instead of leaving it up to parents of minors.
Emphasis mine, I'm not sure "parents should be able to show their kids porn if they want" is the best angle that will get the most traction. Privacy of adults though, might.
Either way, I hope the draconian law gets overturned but that's just my initial thoughts on the case.
Beyond the whole porn issue, as the victim of identity theft, "put all your personal information in this one big database" make me very nervous. Either that database will be hacked or someone with access to it will grab data for nefarious purposes.
Kind of surprised it's not being challenged due to preemption by the FCC, or interstate commerce clauses. I would expect for that though, out of state companies would have to sue in federal courts.