All you are doing, unless you rid yourself of the internet is substituting one form of CSAM scanning for another.
Yes, but a lot tend to ignore that.
The most important thing to recognize is that various companies have been watching everything you do for a long time on the internet to what they possibly can monitor. A typical enterprise intranet would be monitoring all traffic, ports, that your MAC/PC uses, using a http proxy server to stay on top of intrusions, malware, phishing attacks, and other things you're not suppose to have occurring.
Everything you do via your internet service provider is similar. This is mostly from a network guardian aspect not that they are studying you.
But when you visit web sites these days, the sheer scale of trackers, data-miners, is staggering compared to a few years ago. Everyone out there would prefer to make money off of what you do on the internet, particularly social media sites.