As someone who still has (and uses, offline) his original iPad, I can tell you the App Store is now a barren wasteland on that device. Nobody's app runs on it anymore! So don't delete anything.
It's a disgrace that while hardware is starting to vastly outlast software, somehow we have managed to normalize 2-3 years of software support for hardware gizmos and consider 5 years to be generous. And consumers accept this! 5 years is nothing. I have a PC next to me that I bought 20 years ago, and it still works excellently and runs a relatively recent version of Linux. I last updated my phone only because I had to: It was so "old" that it was dangerous to even connect to the Internet. Still worked wonderfully, made calls, but the manufacturer abandoned it (and me) and stopped supplying security updates. So a perfectly functional phone goes into a landfill. This should be totally unacceptable.
It's a disgrace that while hardware is starting to vastly outlast software, somehow we have managed to normalize 2-3 years of software support for hardware gizmos and consider 5 years to be generous. And consumers accept this! 5 years is nothing. I have a PC next to me that I bought 20 years ago, and it still works excellently and runs a relatively recent version of Linux. I last updated my phone only because I had to: It was so "old" that it was dangerous to even connect to the Internet. Still worked wonderfully, made calls, but the manufacturer abandoned it (and me) and stopped supplying security updates. So a perfectly functional phone goes into a landfill. This should be totally unacceptable.