Virginia Tech offering money to incoming freshmen to delay start due to severe over-enrollment

How can they predict 2021, 2022, and 2023 undergrad population. If Virginia Tech decides next year to only shoot for 6,000 freshman to even out the population - the overage this year will be negated. It will then drop the population. They can also slow down transfer acceptances into this large 2023 graduating class to lower the actual population of this incoming class year to year. A bunch of torches and pitchforks (not to mention monday morning quarterbacks) if you ask me! (which you probably didn’t).