You're still assuming presumption of innocence exists. It doesn't for AML/KYC. You're presumed guilty if they can't fully trace your coins.
Discussion
I doubt they will ever be able to implement and enforce this kind of totalitarian detailed complex massive surveillance and chain analysis and interrogation processes but we’ll see what 🤡-world comes up with next. 🍿 Worst case we’ll exit the EU. 
If by "we" you mean bitcoiners, then perhaps yes. But if you mean the Dutch then you should realize that this proposal could have been vetoed by the Dutch government. Instead they probably lobbied FOR it.
If by "they" you mean the government, they don't need to. They'll just tell the companies that it's up to them to do it, and if they don't, they'll get a fine of a percentage of their yearly turnover. That's what the EU does.
In which case, should you mix your coins now I may presume you incurred in terrorism, trafficking, money-laundering at any point in the future.
I mean, the solution can't be "don't mix your coins", but it also can't be "be as noisy about it as possible".
The trick is to resist the injustice, while finding ways to stay alive.