https://edri.org/our-work/temporary-eprivacy-derogation-companies-like-facebook-must-never-indiscriminately-scan-peoples-private-messages/ Given the allegations against them, I'm more concerned about Google's conduct, particularly that from 2019 / 2020, than that of Facebook. That said, I saw parents complaining a few years ago about Facebook's censorship algorithm being over the top. It's also been reported that Facebook has the same issue which Google did when the Ninth Circuit ruled the Fourth Amendment was violated when Google didn't bother to check the matches prior to sending them off.

"If despite all the concerns raised, the legislator still deems these measures to be essential and effective, then commercial entities should be required to implement them."

I don't really agree with this principle. A regulation which restricts when they can do this might help to check their power, however, "forcing" to surveil only really shifts the power from Big Tech to Big Government. That is probably not the only problem with that. It's kind of like a check and balance (although, I don't expect these companies to particularly look out for people's expressive or privacy rights).

It is also worth mentioning that some courts will not accept evidence that involves mass surveillance, as that is seen as a violation of people's rights, and that might even result in criminals getting away. This mainly applies to the "chat control 2.0".