I’d think German traffic engineers could come up with a better solution, yet these are everywhere:
The bike paths themselves are desire paths for cars and motorcycles.
To block them off, they put up barriers, but those also block cargo bikes, wheelchairs and strollers, create a collision hazard, and force all cyclists to stop and dismount for no reason.
Of course, they’ll be bypassed wherever possible – naturally by cars and motorcycles too, if there’s enough room.
Still better than these abominations I saw on the official long-distance cycle routes in the UK a few years ago. Was a lot of fun unmounting all my luggage every time. And good luck with a stroller or a wheelchair.
Btw. your second picture shows, how these things are meant to be installed. ~1.5m apart, so you can easily drive around them, even when going 30kph or with a cargo bike, but not with a car.