It’s well known option from my older phones (LineageOS 14.1 for example) where in developer options I could enable killing the app with ‘back’ button long press.
No, you did not overlook anything.
LineageOS 14.1 is Nougat / Android 7. That’s a long time ago and features have come and gone (mostly gone) in later versions.
It’s still there on my /e/OS Q (Android 10) but not available on any of my R (Android 11) Lineage-based setups. /e/OS, crDroid, and LeOS-R.
Yeah, but why? In my naive imagination there’s still something like progress or further development or maturity or perfection or [is there a substantive for sophisticated?] which leads then to a cumulative result of better and better. - In reality the opposite seems to be the case, many things get more and more idiotic (look at Windows 11). But why?
It annoys me to no end when useful things disappear or things don’t work as they used to (I"m looking at you Android 12 ).
One of the reasons why I’m always rooted or just run something older. My daily driver runs a feature-packed Pie / Android 9 ROM.
Briefly tried Wimdows 11 as it came with a mini-PC. It got wiped in short order.
yes, indeed, the same thing with simple protection for my bank token app, implemented as protected apps in lineageos 14.1 - it was great enough for daily use.