Desperate I'm aware & never said otherwise (I actually use some 2G only devices still on it). The problem w their 2G network is that they never expanded it beyond their initial early Tmo/Voicestream days. So it is what its always been from over a decade ago w humongous chunks missing. [Login to see the link]
The other problems are the SIMs & devices themselves. Most post 2020 SIMs simply won't connect on those phones & have been blocked from doing so. You have to use an older SIM or one from a few MVNOs (like Speedtalk). And the device support is long gone, so hardly anything besides basic voice & texting will work because of old certificates with web & internet securities/tech leaving them far behind. Some can be hacked (like a few S60 Nokias), but most can't.
So yes. Most are either forced to grin & bear it w an older/better device hoping for the best, or move on to the new hodgepodge of junk.