or do people in reality have cars and need to park them somewher

1. Why not let the business decide how much parking to have then? Surely they know the needs of their customer base better than the city. Even as an anti-capitalist anti-free-market socialist, parking minimums seem like an extreme government overreach. You can still have parking without mandating a parking minimum.

2. Why are you working with the base assumption that people have to drive? If you can’t park somewhere, maybe that place should be set up with good alternatives so people don’t have to drive there in the first place, i.e. good sidewalks, protected bike lanes, frequent public transit. Humans are surprisingly space efficient when they’re not in huge metal cages.