How so? It’s not like Apple is going to have its AI hacked to start spotting political symbols instead. So unless Apple start abusing it, their non-paedo users have nothing to worry about.
Most cloud software states in their T&C that they own your data. Without caring too much about individual situations, they will generally abuse it as much as they think they can get away with.
The bigger concern is Google copying it and not having a profit motive to be ethical.
Obviously, there’s an opportunity for Jolla here. “Cloud backup, what’s that?”