My problem isn't that new stuff stopped being developed. It's that old stuff that previously worked is now broken. Supposedly, the app store will keep track of versions and let you download the "last known good" version for your hardware. Unfortunately, many devs released updates that claimed to work on hardware that it didn't actually work on. I had a program that got an update, and suddenly wouldn't work because it now required a "front facing camera" on hardware that had no such camera. They overwrote the "last known good" version for my hardware, so there was no way to go back. Even if they don't actively develop and support things on the old hardware, how about just not screwing it up for people?
My Macbook Air just went out of OS support, and apps have already started to bitrot. My iPhone just went out of iOS support, so it's just a matter of time before I start getting "bad" updates that wreck my stuff. My iPad and iPod touch went out of support years ago, and the only thing that still worked consistently was 2 magazine subscriptions on the iPad...which broke sometime in August 2019.
How much effort is it to keep the digital lifeline services still working, so that I can continue to use paid-for content and apps? I know it's greater than 0, but I went from being a dedicated Apple user to one who will never buy another Apple product. Every single previous purchase has resulted in pristine and perfectly functioning hardware being rendered useless by loss online support services. If I can't update on my schedule and my budget, I can't justify buying the hardware.