I agree, the ridiculous sample used tells you all you need to know. Also, we all have watched people live high at 35-65 and then disappear when they retire because they can’t show off anymore.
Yes, I know that dynamic too...of course, any of us can go down that road, but...a lot of us live within our means from 35-65 too, so we are used to living within our means and not much will change if we plan right!