You know what, let it go through!
If the European people are too stupid to stop it and simply keep on voting for the parties who support this sort of law, then so be it.
The criminals will move on to other means of communication, the privacy minded folks will move to sideloaded Signal-like apps and take their friends and families with them if possible and the rest will just have to learn to live under the new EU-Stasi regime and watch their privacy being stripped a little more day by day.
No EU means that this law would have to passed in 27 different countries whihc would make it much harder to put this many people under surveillance.
So, in this particular case no EU would be a clear benefit because it would give us time to see the effect on this law on the neighboring countries first, just like we saw with the UK and the OSA.
I am becoming more anti-EU by the day and this is just one more nail in the coffin.