my pc is older than all of those numbers and runs fine, and I expect roughly the same from the pinephone

for my pc if I wanna use a sim card after old network shutdown, all it is is swapping a single card on the mobo, perhaps swapping out some antennas too

for the pinephone, just swapping the baseboard without the rest changing, or make/group hire someone to make a case with an updated modem

for battery, because you get a free battery to keep around for emergencies when you buy a new one.

I guess if you want to pay to fix your problems, fine, but not everyone has the luxury to do that!