I’m in claims, there are many more that thankfully turn out ok and never make the news. FBO line guys are no longer aspiring pilot/mechanics who care to think about the difference between Jet A and 100LL, Piper Malibu and Meridian or TBM, they aren’t trained properly and the ones that are leave after a few months for 1 dollar more per hour delivering Amazon packages. Then pilots assume the line guys know what they are doing.
I’ve had many claims where the line tech just holds the nozzle over the filler port and pumps Jet A into a piston, placards be damned. It’s worse at mainly Jet serving FBOs. The desk crew(even less into aviation) assume you want Jet A and you MUST CONFIRM avgas every time. Line crews also should confirm with the pilot when they show up with the truck for anything with a propeller. Pilots should pay attention and acknowledge. Saves everyone time a grief, even on the non-smoking crater claims, it’s angry lawyers, engine exchanges and fuel system flushes at minimum.