Of course, all true in spades. But what is the objection [aside from greed] to requiring some serious physical and psychological tests before allowing someone on the mountain? I know nothing about the criteria [if such exist] other than a bankroll.
Modern guide companies combined with technology have opened up Everest to more and more people. Really no criteria - many will be sorted out well before they reach the death zone. The warning here is to capable climber/athletes to be wary of fellow climbers. The more shortcuts they have taken to this point, the more red flags.