As someone with celiac, I have given up trying to eat at any restaurants other than places that specialize in serving customers with allergy/intolerance/gluten issues. I have had incidents and many have stories of negotiating a safe gluten free burrito or whatever, and then they accidentally served a normal one. Like you say, when they screw up we have no recourse, but unlike an allergy, the effects may not be apparent for hours, but lasts for days. The restaurant and the individuals responsible are generally unaware of the severity and insulated from the effects on the victim. I could be out of work for a week or more due to one slip up.

Now that we mention special needs, there are a couple websites that collect celiac-oriented reviews for restaurants, such as https://www.findmeglutenfree.com/search