>And if the parking app was compiled for SDK level 29, people should just go find another parking lot with a more recent app?
The play store has minimum SDK level requirements, so you can't compile your app against an ancient SDK level to bypass all the restrictions. Moreover, your linked article suggests that even if you have an existing app that does this, the play store will eventually down your app if you don't provide an explanation. This is consistent with some complaints posted on HN recently, eg. https://news.ycombinator.com/item?id=41895718
The play store has minimum SDK level requirements, so you can't compile your app against an ancient SDK level to bypass all the restrictions. Moreover, your linked article suggests that even if you have an existing app that does this, the play store will eventually down your app if you don't provide an explanation. This is consistent with some complaints posted on HN recently, eg. https://news.ycombinator.com/item?id=41895718