> There are strict limits on what repairs you can do yourself without involving a licensed A&P mechanic.
Sure, you're right that this plane was clearly violating a myriad of maintenance violations. But maintenance violations aren't going to get you thrown in jail. They might get your license taken away and would definitely yield some fines, but not thrown in jail.
I am assuming of course this is on a personal GA plane (like the youtuber was using to fly himself). Skipping maintenance and/or doing it himself would have gotten him a few relatively small fines. He probably wouldn't have lost his license and certainly wouldn't have been thrown in jail for these.
Of course the rules would change significantly if this was a charter plane like Part 135, then things are more serious. He would have lost his license then, and maybe gotten some jailtime. Skipping or fraudulent maintenance on a part 121 (scheduled commercial airlines like United or Delta) would certainly yield jailtime.