Apparently Apple can end-to-end encrypt your iCloud, but it’s opt in because they still want to profit off your data >_<
To enable this, go to Settings -> iCloud -> Advanced Data Protection
You need to have all the devices under your apple account to be fully updated, and you’ll need to remember a 28-key passphrase for recovery
I hate how big tech treats privacy as an afterthought. This should have been the default. But oh well. Spread the world people.
There is also the possibility that some governments would crack down on encryption much more than they already do if E2EE was on by default.