Yeah I have seen a “bike lane” being created by just painting the road, which is obviously not great. Bikes parked on the sidewalk are a symptom of missing parkings, as I mentioned, which is also why pushing for cycling requires more than lanes, requires parking spots and supporting infrastructure.

Also, I share part of your pain. Sometimes it happens that I cycle on bike and pedestrian roads (I.e., meant for both) and I need to dodge parked scooters, especially those parked in front of ramps. Unfortunately there is no infrastructure or planning that is asshole-proof.