The idea was that the manufacturers wouldn't be stupid enough to cheat on the emissions tests, because the ramifications of needing to do remedial work on hundreds of thousands of cars, pay compensation, break the law... But they were, so clearly things need to change now and they have.
Thing is, Europe is moving away from fossil fuel vehicles anyway. There will always be some, but most countries are looking at 5-10 years for the end of most sales, and some have already reached the tipping point where most people buy some kind of EV and it's actually a pain in the arse to go buy fossil fuels now as many petrol stations are shutting down.
The remaining vehicles will be for specialist tasks, so emissions won't be such a big issue and there won't be very many of them. Even stuff like long distance haulage, which was supposed to be impossible for EVs, is working just fine with battery only vehicles now.