I think that this is a very two dimensional way to look at the issue. Sure, big social media companies don’t want to be responsible for what happens on their plattforms, but that doesn’t and shouldn’t mean that it is sensible to compromise encryption like this. Also, it’s not like the already existing unencrypted, public parts of big social media platforms tend to be well moderated.

The argument that I often hear brought up is that this new surveillance capability would only be used when there is a court order, but even assuming that those are always fair and valid, and the police never circumvent due process, it being a possibility would inherently necessitate breaking end to end encryption, making communication less secure.

I don’t think that the government should be allowed to secretly listen in on communication in this way, but even if one thinks they should be allowed to, breaking secure communication for everyone doesn’t seem like a price that is justified.