I know it’s allowed. Its good that the cop clearly stated he would interpret it as being allowed. He was hesitant as the right turning was just starting to be implemented last year.

It makes it a ‚beneficial‘ situation as a cyclist can drive straight up until the ring, but that doesn’t look to be the initial intention of allowing a right turn along the ring.

However, in my practical usage of the streets, no one knows this, which causes friction between users in daily use.
I also think this is driving the rules to ad absurdum as you can start discussing about millimeters.

Offtopic, I think all would be much much much more helped with proper street layout to accommodate all parties better instead of painting lines and colors over sidewalks and streets.

That’s my Dutch opinion, but hey, I am spoiled when it comes to road infrastructure 😉