For me Marc Abrams makes so many valid points that are too many to list... I faced this issue just a few years ago. A guy came into my dojo and after watching awhile said he was interested in joining, before I could answer him he said " I am not doing any bowing, Allah said we should bow to no man !! " I explained that we do not bow in submission but in mutual respect..he stated flatly that he would not bow....To cut the story short, I told him that I had been teaching for 50 years and no one comes in my dojo and tells me they will do whatever they want to do. Imagine a dojo where indvidual students do their own thing ? I personally escorted him
out of the dojo....I have good students of the same faith and there has never been an issue.....