Well, realistically, if this were to pass, it would likely run into trouble with the courts. There's a bit of a history of this; in particular the Data Protection Directive got struck down by the ECJ for violating fundamental rights.

No? If they win it mostly flips who pushes the proposal to change the law and who opposes it.

Except ... where do you get the idea that the police forces will respect the law? If you want to get an indication of that just read the judgements here:

https://www.echr.coe.int/

Note, especially, how many judgements are about the state already getting convicted a first time and then immediately violating the judgement, and in some cases the size of the convictions tells you something:

https://www.echr.coe.int/w/judgment-concerning-t%C3%BCrkiye-...

(over 6000 very serious individual violations by law enforcement)

Or take https://www.echr.coe.int/w/judgment-concerning-greece-9 where the Greek state illegally abducted 2 children and moved the to the US. Obviously this court provides no recourse, and the Greek state is entirely free to just totally ignore the judgement.

So where do you get this idea that law enforcement or the state will respect the law when they don't get what they want?