If that wasn’t sarcasm,you are an idiot.
The same general infrastructure supports the phones and internet.
The ham operator can be completely independent of all that,although it does mean point-to-point communication only. But the ham OUTSIDE the affected area can “patch” the signal from the disaster ham to the working phones in the unaffected places. IF the governments permit it. Some non-US hams have lost government jobs, had their radios confiscated, and been fined, all for rendering aid in an emergency because their nation’s government have very strict rules on use of radios/telecommunications.
LOL! Ham is outdated trash that just some old goats use just to feel special.
(And yes I was being sarcastic)