It is still not clear to me what is the level of gravity of the situation when a celiac who is generally on a gluten-free diet gets contaminated accidentally. What about for a NCGS ?
For both disorders, being glutened sets your health back a few weeks to a month - generally. Obvious symptoms may only last a few days (stomach ache or headache) but others can last a while (arthritis, hair loss). There is also the possibility of increased inflammation which can contribute to other health problems.
Once you have been eating gluten-free for a few months, it really isn't that hard. It's similar to people who have food allergies like nuts, eggs, or milk; you just get used to reading labels - it could be much worse. I personally find the only time my celiac disease is a hassle is when I am eating out and I can't bring my own food.
It isn't that hard. I haven't been glutened in about a year.