It's such a myth that 5G can replace optic fibers, afterall 5G itself relies on it, if it requires setting up expensive(controversial) cell towers really really close to homes, why bother making it wireless.
https://arstechnica.com/information-technology/2019/12/5g-as...
>Noting the dense deployment of cell sites that millimeter-wave spectrum requires, he commented: "This means that a wireless company almost needs to become a cable company to make it work."
It’s a lower capital expense than running fiber, and wireless carriers have more favorable regulatory environment than wired companies.
Yes, this is true because wiring the house is annoying and people often don't realize how much it can help, and because there are other delays. But the big Internet companies have found that lowering latency will increase engagement. Lower latency should change how well video chat works even if people don't quite realize why it's better.
Most other applications don’t really care about latency. If anything, we’ve used software to move lower latency applications like voice to crowded, latent and unreliable networks.