This is not the reason for security patches taking too long to be released to certain phones; Google has a monthly cadence of releasing security patches and zero-days have rarely (I can't remember a case of that happening but maybe it has happened) missed do you have a source for it?
> Oooh, ooh, no that's not my favorite thing, my favorite thing is how each cellular company gets to put their own bloatware on top of the bloatware that each phone manufacturer gets to add to it.
There are unlocked phones available and honestly this problem is mostly a US problem. Rest of the world isn't in the iron fists of their carriers.
> Oh wait, maybe it's patch support ending for new phones 3 years after they were released.
You can vote with your wallet and choose vendors where this is not the case; Google, Samsung and Recently OnePlus offer 5 years of security updates.
Yet and still Microsoft solved this problem years ago. Why can’t Google? Hell my 2006 Mac Mini got years of Windows 7 updates after installing Windows on it.
That's crazy, though. It's not like there isn't a module for that cellular modem, and they don't touch that code for every release.
That's like blocking a Firefox update because the Windows driver for the mouse could be impacted.
In the rest of the world phones are unlocked in terms of being able to use different SIM cards, but mostly the bloatware is still there and can only be disabled (not removed)