I think historic content is very valuable which is why I am offended by this absurd response on hacker news where people are conflating the actions of a protest with the consequence of a law.
If someone chooses to protest this law by deleting their website then more power to them but we must be honest about what it is: protest.
People should be considerate about the consequence of the services they release onto the internet. We can debate the specifics of whether certain requirements are reasonable/fair/beneficial but it’s patently absurd to label choices these website owners are making as being caused by this law. The law has zero to do with historic content, there’s not a single risk to anyone who leaves a website online in read only mode as an archive.