In order to monitor encrypted communication, investigators will in future, according to the Senate draft and the Änderungen der Abgeordneten, not only be allowed to hack IT systems but also to secretly enter suspects’ apartments.
If remote installation of the spyware is technically not possible, paragraph 26 explicitly allows investigators to “secretly enter and search premises” in order to gain access to IT systems. In fact, Berlin is thus legalizing – as Mecklenburg-Western Pomerania did before – state intrusion into private apartments in order to physically install Trojans, for example via USB stick.
As long as they can only do it with a court order and for just that specific instance (no dragnet bulk surveillance shit like in the UK and US) just like they would any other wiretap, then I don’t see the problem.
The scary authoritarian shit is the bulk surveillance without Court oversight such as in Chat Control.