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.
Stop and dismount? Those seem completely navigable mounted imho. Why would you dismount?
IF you have a small bike maybe. I often have a kid on trail-a-bike. Sometimes I have a second kid in the trailer behind that. The train cannot be got through that. Even my road bike alone often cannot make those tight turns without dismounting, but it depends on the exact geometry of the gates.