I have personally flown from Seattle to Hawaii on a 737 MAX. That is 2320nmi. So no, the ETOPS limit is not 200nmi. There's nothing between the west coast and Hawaii but water. You can see AS853 is a nearly straight line from Seattle to Honolulu. If any of that deviation is for ETOPS it is minor.

ETOPS is time based, not distance based. The 777 has been approved by the FAA for ETOPS-330, which is 330 minutes of flight time to the nearest airport on one engine.

The 737 MAX is ETOPS-180, so it only has to be within 3 hours of a suitable airport when running on one engine.

https://flightaware.com/live/airport_status_bigmap.rvt?airpo...

https://en.wikipedia.org/wiki/ETOPS

https://en.wikipedia.org/wiki/Boeing_737_MAX

https://www.flightradar24.com/data/flights/as853#2ef8bfcb

The 787 has a 330 minute ETOPS certification, so as long as it’s within 6.5 hours of an airport it can fly there.

That’s almost everywhere on the planet except the South Pacific and Antarctica.