I live in Luxembourg and the infrastructure is not as good as the Netherlands. Majority of offenders (in my experience) are delivery guys and teenagers. Where teenagers simply don't care & do reckless things like passing on a big intersection at full speed on a red light, delivery guys do the same things for extra tips.
Some of the fat-tire electric bikes are really fast, I happen to chase them on Kirchberg cycle road. I sustained 40km/h average behind delivery guys and they were still faster, eventually dropping me. (I was on a road bike).
Simply put, anything above 250watts does not belong to cycle lane.Includes humans :j