Little yellow Brompton
A dark destroyer of biscuits!
I've no idea how the Dutch do it, but Holland is a different country with a different culture, I've never ridden over there, and no good brakes are not the be all and end all of bike safety, they are an essential part of it.
That's your opinion, it seems that those making, selling and using "Dutch" bikes have a different opinion(s) and find them less than essential. It's IMHO a dangerous route to follow to think that "illegal=dangerous, therefore* Legal=safe"
*( Why can I never find the symbol for therefore?)