The main evidence of the scandal is that the recruitment funnel prioritized on things that were bad. And, make no mistake, that was a scandal. It does not, however, even attempt to show that recruitment forced hiring to accept people that lacked merit.
That is, it does show there is a good chance RECRUITING rejected qualified people. But that is not enough to show that HIRING was necessarily lowering the bar.
There is a begging of the question where we assume that they must have. But show the performance numbers! Without those, you don't know.
And again, in context of the current debate, realize that the last 4 years are the only growth years in that agency. Such that the last 4 years are the only ones that made ANY progress on helping understaffed towers.