due to a new airplane design (in part built for fuel economy).

I assume you're talking about the 7N7/7X7 which later evolved into the 75/67.

The 727 in and off itself still had nothing to do with ETOPS even if you could make the weak argument that the 7N7 was loosely based on the 727 but that's grasping at straws.

Also, ETOPS doesn't specifically apply to transoceanic routes, it's just based on diversion time, so the fact that the 727 never flew transatlantic is irrelevant.

I'm aware of that. But the fact that it never often flew far enough to even need to stick to 60 minute diversion limitations meant it was basically a strictly domestic/short hop international aircraft.

It was more of a case of Boeing saying "Hey FAA we got the 757/767 now and they're very much capable of flying safely across the pond so chill out on the rules"

However, nearly a decade earlier though Airbus was already pretty much doing the same thing as the FAA ETOPS rules under ICAO provisions on their A300s.

I used to have a book, long lost in my parents home, that went into great detail on ETOPS and the dawn of large twins. It was a great read.

Anyways that's just pointless pedantry

TL;DR wendover has a bad habit of using completely irrelevant aircraft in his videos, and many times blatantly wrong (like when showing a piston twin cessna when talking about turboprops in that other video)