MLB likely nixing seven-inning doubleheaders, extra-inning runner. https://nypost.com/2021/07/13/mlb-likely-nixing-7-inning-doubleheaders-extra-inning-runner/
Aside from the other problems I have with whatever crack-head came up with this silly format, the article also brought up another point I had not even considered, in that how can teams charge FULL price for tickets with the customer expecting at least a 9 inning game but if that game ends up being part of a DHer, the customer only gets 7 innings?...how can they justify that?