Hey, can you guys explain the technicals to a non-pilot? Like, is this skillful stunt-flying, or completely unnecessary and borderline suicidal? What’s your take?

It's been sped up, but he's flying low and fast recklessly. He's then pulling up sharply in a relatively high G manoeuvre, before levelling off at speed and pulling negative G's with somebody in the back who isn't strapped in,. There are loose items (a person, backpack, phone, other crap) floating around unsecured which runs some risk of fouling the pilots controls. All of this is being done at a height where they would not have time to recover the aircraft before it hits the deck.

So basically there is no skill shown and the manoeuvres are all unnecessary. In addition, the way that he's slamming the controls suggests inexperience with the flying controls; is he overcorrecting for minor bumps? If that's an instructor in the other seat then they aren't doing a very good job with their student.

I also wouldn't want to fly in his plane. Normally a light aircraft lasts \~50k flying hours. Exactly the same light aircraft flown by military pilots for their basic training including lots of aerobatics (aka where the pilots try to rip the wings off doing cool fun stuff) tends to last closer to 5k flying hours and requires frequent X Rays of structural parts of the aircraft to check for cracks, as well as checks from skilled mechanics on things like engine mounts that tend to deform under repeated abuse resulting in things they are securing falling off.

What are the chances that airframe is receiving those sort of checks? So basically you might be getting in an aircraft where the engine, prop or wings might depart the rest of the aircraft without advance warning because it's not receiving the sort of maintenance that it needs as a result of how it's being flown.