Yeah, software support tends to be pretty bad for their devices, with few updates, and they are often bad with posting kernel source for their devices, so hard to get custom roms or flash alternative OS’s on them too. But if you want a phone that has a battery that can last 3 days straight - they are indeed available for purchase
Except within the USA, declining population growth could be reversed immediately simply by returning to our pre-1924 immigration laws (i.e. the Ellis Island era) that between 1890 - 1924 allowed the USA to have some of the largest economic growth it ever has done. Yet “conservatives” (better termed “regressives” or “reactionaries”) these days want to do the exact opposite, out of xenophobia.