I used to hate the /s but we live in a global world where there may be young people and non native english speakers reading these comments. What is an obvious sarcastic joke to you and I might get lost in translation and on a case like this where actual fatal consequences could follow the joke being misunderstood there's no harm in the community self policing a little to help keep everyone safe and in the loop.
FYI, the fat dripping from steak does actually cause flare ups and sometimes even sustained flames in grills. This isn't dangerous in a grill because it's designed to cook with fire at high temps. But it can ruin your steak if you aren't paying attention.