Similar complaints about DCA. But, this has nothing to do with TSA as all of the lines feed to the same TSA people starting with the ID check. It suggests more to do with efficient use of the available lines.

That feeds back to likely increased access to Pre-Check by people who would have, in the past, used a priority lane of one kind or another. Especially true at DCA where active duty military FF's are a significant chunk of flyers.