These things take both time and massive political will.

As somebody living in a city that's quite bike friendly, all things concerned, but still not close to Dutch or Danish levels of biking safety, I'll take any "technical solutions that try to solve social/political problems" I can get to make my commute safer.

Also, anything that makes biking feel safer will make more people try commuting by bike, which in turn increases the political will to change traffic laws and space use. Nothing exists in a vacuum.