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.
It would have to be super old. My 2015 and ‘16 iOS devices were fine. The only thing I had to remove was my 2010 white MacBook (which I just keep around to run home media anyway).