So what? The law enforcement knows you have an account and knows the sign up date and last login. That doesn’t affect your privacy whatsoever. Besides, Europe isn’t a monolith. You can absolutely buy and use a SIM card without disclosing your name in some countries.
Why bother? Backporting security updates or updating packages is work and in case of debian often unpaid. Trixie is for testing new packages and configurations, does not make a ton of sense to keep everything up to date.