The same vague claims keep getting repeated, with absolutely nothing to back them up. Not even a "here's the problem with the law in our case" super fuzzy high level overview. It's always about the effort of adhering to the law without any discussion about why these companies are facing difficulties in the first place. Not the actual difficulty with implementing the law, just the vague effort they've put up with.
Hundreds of thousands of businesses have not had issue with the law. Suddenly some guy on HN with two "top tier" law firms at his back faces this unimaginably heavy burden and extreme obstacles when trying to adhere to the law. Sounds like a nightmare, in the sense that it never happened.
OP's post and the many others like it are just typical American business favoritism against any kind of regulation masquerading as a personal True Story (TM). I still remember when cookie warnings were "hard" to do and businesses actively implemented them in obviously shit ways, in bad faith with the regulations. It's so obviously contrived for a particular audience it's kind of absurd it immediately doesn't get flagged.