I figure the current FAA push for real ID is based upon the desire of the Federal Government to ultimately standardize the States methods of qualifying voters who come out of the shadows to vote in General elections. Too many States issue drivers' licenses (and other forms of fluffy identifications) to non-citizens, criminals, etc., who are currently able to vote in Federal elections.
In order to begin fixing the problem of non-citizens voting for President and other Federal positions they must first determine who is eligible to receive a ballot. Using the peoples' strong desire to travel via the airlines (worked during the COVID debacle) travelers eagerly supply whatever paper is requested to keep that "privilege" readily available.
Hopefully, the next step following Real-ID is cleaning up election fraud. Easy to implement process improvements (like Federal standardization of paper to be used for in-person ballots, watermarks, traceability, etc.) can then be used per Federal directives.
Let the states conduct their own State elections however they want. But corrupt state elections that determine who become Federal politicians holding power and making decisions that affect people in other states (like me), must be made to be legal, efficient, transparent, and honest. If Real ID is intending as a first step to help make this possible, I'm all for it.