More "democracy", where you must win every time and the issue will keep coming up again and again, but if you lose once whoops the matter will never find its way back onto the docket and you will never get a chance to have it reversed.
On that basis, the highest EU court (CJEU) has ruled several times that mass surveillance is unlawful. Governments are still trying to find a way around these protections, but it's not a certainty that whatever ultimately passes parliament will hold up in court.
So what do we do for 8 years while the courts decide which side is right?
The same dynamics govern passage as reversal. You keep trying until they slip up.
Abortion got reversed recently.
Why? It's normal legislation, it can be repealed the same way it's passed.
The EU doesn't pass legislation trough it's supreme court.