So in your mind because bad thing X is already happening, it's completely OK for bad thing XY to also start happening?

No, it's that in spite of there already being an invasive scanning process in place for this long at every major tech company that handles user data, nobody seemed to care until now.

Also, there's a difference. You upload stuff to someone's server' if they don't vet it, they become accomplices. Apple intrudes on what you do on your phone, this, among other things, tells that you paid mad bucks for this phone and you don't even own it, you rent it from your phonelord Apple. Also, in their eyes you're suspect and likely a filthy pedo.

Most people weren't aware or couldn't see where this was going. Now that it's becoming obvious, people are starting to care.