No part of this graphic should lead you or the commenter or anyone else to "this" conclusion. The population of people who take the SAT and the population who enter one of those 5 schools are very different in volume. The chart visualizes students who scored over 1400 on their SAT. That includes plenty of students who just got 1400 and plenty who got perfect scores and lots in between. Without any other info you don't know if the urm group on the right were the most meritorious and worthy of entry or even what their SAT scores are at all other than that it was over 1400.

So that would be a petty stupid assumption, one that I'm pretty sure most intelligent people wouldn't make. I still wouldn't see the link between that asinine conclusion and degree inflation. Even if there's an issue of letting non-meritorious candidates in, there should be no issue of degree or grade inflation just because the wrong kids got in. They'll flame out or underperform (which is actually a much bigger problem that degree inflation). Grade and degree inflation is an issue with the education and educators at those particular institutions. Maybe original commenter is just a shitty educator at a shitty school.