As someone with elderly parents, the Googles and the Microsofts of the world really don't seem to give a shit about the elderly anymore, if they ever did. Random UI updates and workflow changes with no announcements, thinking they're "intuitive."
One of these days the product managers who push these things thinking "oh, it's easy, you just . . ." are either going to be explaining it to confused Mom or Dad, or they're going to be elderly and irritated themselves. Until then I hope they stub their toe or step on random Legos regularly.
I'm not even elderly but I would really like an e-mail client with a stable UI. I used to like Apple Mail but it's been a buggy mess since Catalina. It doesn't even sort or search mail reliably any more. It's basically a trope at this point but a robot-rewrite-in-Rust seems inevitable at this point.
A while ago I helped an elderly relative migrate off off a copy of Eudora that they'd been using for many years. (To Thunderbird.)
Originally it was about difficulty migrating to a new laptop with a different version of Windows, but I was quite firm about it because when I realized it wasn't able to do secure connections for some reason, so the instant they took their laptop to public Wi-Fi...
P.S.: Migrating decades of local messages was a huge problem. It's been so long that many import/export tools are defunct. I was even loading up extremely old versions of Thunderbird to see if I could import to that and then upgrade.
However the GitHub edition (not Sourceforge) of Eudora2Unix [0] saved me and deserves a shout-out here.
It took some tweaks and a harness to repeatedly try the conversion, since I wanted something I could literally drop into the Thunderbird profile folder. The final result wasn't perfect, (some file attachment issues linger) but it's way better than having it all at risk of Eudora.exe just refusing to launch one day.
[0] https://github.com/jonabbey/eudora2unix