Re: well, that's wildly unconvincing
"5G fixed wireless will fill a small niche of users in areas that are underserved by wired broadband"
I'm currently considering 5G fixed wireless as my current cable connection has a much worse price:speed ratio and lower theoretical max speed. However even the 5G provider themselves do not provide this solution to any of their clients reachable by fiber, and only commit to supporting the 5G until they roll out their fiber to wherever the client is, at which point they will switch the cli to fiber.
In other words, it's also probably easier / cheaper for the operators to use wire/fiber than wireless, and they would rather keep their (very expensive) 5G spectrum to service mobile users rather than 'waste' it on home users