An interesting sidebar. It has been almost a week since I installed iOS 15 and iPadOS 15, but it wasn't until last night that a notification banner appeared on my iPad apparently without my having attempted to launch any application:
Originally Posted by Notification
This application is not compatible with this version of iPadOS and must be updated by the devloper
Click here to delete {the name of the app was here}
the only way to clear the notification was to "click here". I had forgotten I had the app and I won't miss it, but the interesting part is as far as I am aware I did not attempt to launch either app yet I still got the notification. ❓🤷‍♂️❓

If we knew what it was we were doing, it wouldn't be called research, would it?

— Albert Einstein