We have many people who decide to which our product has not been tested with. For example people will use litespeed, nginx, and some even windows server which we dont provide support for at all. But we have to draw the line somewhere and say "this is what we support" I suppose is the answer to the question there. Theoretically there would be nothing stopping us providing support for it, the same as anything else you can name. But these all come at a cost of extra development time, testing, and of course introduction of more bugs. I think you may have taken 'many' out of context there. Many is not the majority. In fact it would be a long long way away from a majority in this instance