I think this evades the spirit of the legal protections here, at least.
Note: I'm not disagreeing with you, and don't really have a solution here. Just pointing out how the current situation feels like dangerous territory.
Or, more generally: given how subjective ideas about acceptable speech are, the only real solution is to break up giant gatekeepers like Google.
FCC regulation of TV broadcast comes close, but apparently obscenity isn't protected under the First Amendment (perhaps you can tell I'm not a lawyer, or for that matter an American).
https://www.fcc.gov/consumers/guides/obscene-indecent-and-pr...
The obscenity exception was largely non-controversial until the 20th century, because there was a broad societal consensus, among both popular and elite opinion, that obscenity and pornography did not deserve First Amendment protection. It was only in the 20th century that societal consensus broke down, and it was in that context the US Supreme Court decided to reduce the scope of that exception. (It still exists, and is still occasionally enforced.) The original authors and ratifiers of the First Amendment supported laws against obscenity, and didn't believe the First Amendment prohibited them.
Ultimately the courts have to decide what laws mean, even constitutional laws – but they could always have given them more guidance, by being more explicit in the text about which exceptions are valid and which are not
There is probably at least a little truth to each of those, although I think many of them are also effects of central causes (e.g., religious control over common people's lives declined because of increasing incomes, which increased due in part to advances in communications tech).