That's wrong. A bad bike lane is better than nothing. Because the first step is appropriation of the space, once people get use to have a smaller space for cars, the painting can be more easily transformed into proper infrastructure.

Cars are only thing that creates congestion.

There’s a ten mile stretch of road that I live in a community off of. It’s a really busy road. Grocery store, gas stations, fast food restaurants, one of the elementary schools, one of the middle schools, and the high school. So while it’s normally busy it’s insane during school start and release times. There is a five mile section in the middle of that ten mile stretch where the sidewalk is on the opposite side of the main road for some reason. They decided to make bike lanes by painting lines and bike symbols on the road on the sidewalk side for the entire stretch of road. While they have crosswalks with lights at all the regular intersections, at each end of that five mile ‘bike lane’ they painted a dashed yellow line path across traffic to transfer the bike path to the other side and put blinky amber lights on each side of the road.

I’m fairly certain you would need to be suicidal to knowingly traverse that bike path from start to finish. It’s bad enough you’re kissing mirrors the entire ride but then you would need to cross a busy street, twice, with no actual assurance anyone will actually stop for you. The cherry on top is there’s also an increased number of student drivers on the road regularly from the high school.