I read this as saying that MIT is becoming less competitive? Means if you just finished your BS, applying to a PhD program at MIT may be a 20% better bet than before, especially with the job market in its current condition…
That means fewer available slots overall. Kornbluth's comments don't explicitly state anything about _applications_, just _admissions_. Given the heightened economic uncertainty and poor job prospects for recent graduates, I'd expect more students to be looking for graduate school as a way to tide themselves over.
So a very, very bad picture for folks seeking graduate education and training.
This is a 20% drop in enrollment, not in applications.
If applications stayed the same, it would be more competitive, if they dropped more then 20%, it would be less competitive.