I thought they were different things. A Stint comes under the 'bijzondere bromfiets' category, the same as a Segway (which remains legal on Dutch roads). Each individual model of vehicle in this category has to be specifically approved by the government for use on the roads.

After the 2018 accident (in which the brakes failed for an unknown reason), the Stint lost its specific approval. Officially there wasn't any effect on any other vehicle in the category, though I can imagine that it might have made the government more reluctant to approve new models- no electric folding scooters have yet been approved.

In the meantime, I think the best option is a folding bike, electric or otherwise.