The real danger behind Chat Control and similar measures, is that countries won't even have to utilize parallel construction anymore. No longer will dragnet surveillance mostly target the big guys. They'll be able to basically automate prosecution of any crime that they desire.
Think about how many little slices have been taken out of our freedom pie over the last 10 years. How many similar dystopian laws have passed despite our outrage?
Technology is outpacing our ability to protect ourselves, and countries will keep pushing boundaries until nothing is left sacred.
Oppression never sleeps.
I'm almost positive they've been developing an image recognition AI that will make slightly altering csam photos obsolete.
Here's hoping.