I don't think anyone was disputing this. A 30 second Google search gets you this:
https://www.health.ny.gov/regulations/medical_marijuana/faq.htm
If you were in "constant pain", you wouldn't be on an active NFL roster, correct?
Therein lies the rub. There are excellent medications for Crohn's. TNF inhibitors revolutionized the therapy for IBD. In this day of age, most people with Crohn's are not living with pain or urgency to defecate. And if they are, this means it is still active (not in remission). These are the people that are not on active NFL rosters and the ones that need real help, not marijuana.