I’m living in peak appification at my gym. It’s one of those 24x7 places and an app is required to unlock the door. I find it amusing that part of the installation process requires me to deny always-on location sharing - why would I need the app to know my location when I’m not at the door?
You should find it insulting that they are likely selling that location data, not even to the highest bidder, but to a data broker that resells that data to anyone that will buy it for any price they'll pay.
Yes, this is standard practice in the app industry. I guarantee every app outside of f-droid that has location access is tracking you 24/7 and selling the log.