price per spec isn't the worst aspect of it, though I suppose this is true. (the prices aren't insane but the specs are very bad because chipmakers have very bad mainline linux compatibility)

What's worse for the average person is the base functionality is a little bit unstable still, the app library is small and requires a lot of fiddling to make common services work that would "just work" on a typical smartphone, and they don't exactly even solve OPs problems directly since LTE will eventually go the way of the dodo too, and banking apps don't support it. Banking websites do, and linux phones generally run up-to-date mainline linux applications not out of date abandoned android versions, so it is workable for some people, but its not nearly as good of an experience relative to an android/ios smartphone as desktop linux is relative to windows

Oh and no unified system of push notifications on linux phones, so you have a tradeoff between battery life (sleeping all the time and only waking on calls and texts), vs actually getting non-SMS messages (need to wake up periodically and let every app individually check for messages). And that's on top of the battery life already being bad