I dunno, my original iPhone SE is still doing fine as a backup phone and video cam. Yes, I upgraded past that because I wanted new features, but for the basic stuff it’s still working fine. I’ve never had an old phone “bricked” by Apple, even the original 3GS I recycled when I upgraded to the SE. Phones have definitely been left behind and no longer supported for further upgrades, but that is not the same as “bricking” them.
Do you have a specific, documented, example of that happening? I’d definitely like to see it.