One big downside to ham radio (as someone with my license) is that you can't use encryption. Which is fine for some use cases, but does limit the usefulness in the "government shut down the internet" kind of scenario.

Which, I suppose if you're already using back-channels to circumvent some broader government censorship, maybe abiding by FCC rules isn't a priority anymore, but IMO this is an area where large mesh networks of "consumer" devices with encryption very much still has value.