About a third of American households make 100k a year. Median household is about 70k a year:
But I suspect the person making the claim was just picking an arbitrary number where most people in that salary band will have decent benefits, and can usually afford the out of pocket portion also
I think you're reading too much into the OP's off-hand guesstimate. At every company I've worked for, the engineers earning $200K are on the same health insurance as the high school graduate in the warehouse earning $40K/year. The higher compensation makes it easier to clear the deductible/out of pocket maximum hurdles, obviously, but there wasn't a secret insurance plan that got unlocked at higher compensation.
I feel like a lot of such medical tourism has more to do with cost than quality of care.
To your point, rich people in the west have prime access to world class care, and if it's not an emergency they'll fly to wherever they need to get the best clinics they can afford. People flying to Korea for plastic surgery is a thing.
Even at upper middle class you can go through non subsidized clinics if you want prioritized and/or special care.
Being even mildly rich will always help.