That and fire is extremely hot when it's big. If you've never been near a house fire or a forest fire, you might underestimate just how hot shit can get even several feet away from the actual fire or embers. Hot enough to ignite things even without actual contact. You may see them dumping water nowhere near any flames, and it's to hopefully slow or stop it from spreading.
Even with the free delivery, you're paying more. The price per item is higher through them than going in-store or using in-house delivery (if available).
They're just a solidified cheese beshmel. It's cheddar, milk and binders to keep it solid. At least the good quality singles. Some of the cheaper ones are made with oils and have no actual cheese. Those ones behave and taste like plastic.
I totally have memories of my ancestors being absolute badasses and influencing nearly all of human history. Put me in the machine and I'll show you the way to the ark of the covenant so you can foolishly open it and melt your face.
Is that a brand name or the actual food? I gotta try it!