T-Mobile 5G Home Internet is $50/month. They’re using spare 5G capacity because they overbuilt their network. You’ll see congestion during peak usage times, but it’s fine otherwise.
Yeah, that's kind of the issue. That, and latency.
Sure. The "for what it is" is doing a lot of heavy lifting, though. See also: it's rather expensive for what it is.
I'd love symmetric fiber for $50, but 'for what it is' isn't doing much lifting at all.