They don’t call it the “Golden Rule” but I have spoken to some who nonetheless espouse the idea of treating others as they would want to be treated themselves. All others.
But Muslims only treat other Muslims with respect. Everyone else is a kafir, and so don’t qualify to be respected.
Yes there are some very immoral (or should I say amoral) atheists, and though I don’t have respect for them, they don’t generally believe I should have my head cut off because I don’t submit to their god.
muslims too have “made it up”, their so-called faith, though by stealing long before established Hebrew scripture.