I couldn't find anything in the wiki about the NFL forcing Maxx Crosby to make a specific change that upset him. The Maxx Crosby page covers his 2026 outlook, trade rumors, and his knee injury situation, but there's no mention of any league-mandated rule change or forced action that he was unhappy about.
It's possible this is a very recent story that hasn't been added to the wiki yet, or it might be related to a league-wide rule (like uniform or equipment rules) that Crosby commented on but isn't covered here. Do you have any other details that might help narrow it down?