It's like when I get a 25 cent check for some class action law suit. I absolutely cash it because it takes me only a few seconds to snap a pic on the bank mobile app and it's done. They count on this *NOT* being done. They spend more labor hours creating them, printing them, distributing them, managing them and processing them. If AA chooses not to implement a fully electronic voucher system, that's not our problem.
What IS our problem is the hassle of actually redeeming a $7 voucher. You can certainly call and apply it to a reservation if you can do an AAdvantage Hold. You can do it at a ticket counter if you're traveling near one. You can mail it in. None of these are ideal, but in principle it's important that we use the paper vouchers they give us.