These days not having an e-bike is probably one of the easiest deterrents. Next step seems to be to avoid design bikes like Van Moof. And finally, have your bike look used.

Then again, my bike is probably not the first one they'll consider, given that it has a 70cm frame making it all but impossible to ride for anyone under 195cm (being 200cm myself). If you steal a bicycle you have to be able to sell it, and given that a lot of professionally stolen bicycles are exported to countries with lower GDP's and that there aren't that many (if any) countries where tall people are as relatively common as in the Netherlands that match that criterium, I am relatively safe I suppose (as long as I lock it to a barrier or bicycle stand).