Red flag!
I can only image what happens to someone who answers : ''yes I am disabled''... :
No call back. Unless the job is with a special program encouraging people with disabilities to apply. (and this would be mentioned)
So lets all be aware, discrimination is common, and illegal in job candidate selection/interview and many other matters are. Another common one is for women and questions such as: Do you plan to have children or any more children? Discrimination against maternity is frequent in the work place. I know of many women who lost their jobs due to maternity, it is truly disgusting.
https://www.thebalancecareers.com/job-interview-questions-that-are-illegal-1918488
In Canada, doctors can give medical disability certificate in case someone would want to enroll in a special gouvernent program. We cant proclaim ourselves ''disabled''. Only a doctor can do that and preferably a specialist, such as a GI will give you more chance to apply for benefits or help from the gouvernement. Crohn's can become a disability if the disease or its complications are so severe, it leaves the person in a situation of handicap, unable to work. A disability can be temporary or permanent and only doctors can sign those certificate. For those of us who are able to work, who are in remission or who experience mild to moderate disease activity, we would not qualify as disabled.
Every individual has their own tolerance to stress or physical jobs, independantely of illenesses, sometimes, its a matter of personality or choice of living. After a while, we know what we can or cant do and it becomes our responsibility to apply for jobs we feel comfortable in. If a job would ask me if I am disabled and if I though I could have done this job in the first place, I would run away. This is a big red flag imo. Certainly not a work place that would be sensitive or supportive in case of any future flare or any sickeness.