Hold on a minute...
so AsA says it's not an
...
but, you need fuel to keep the engines 'operating', I'd sure call that an 'operational item'!
Yes you should call ahead if you 100% definitely need that fuel to continue safely, but how about someone who like has been said, only drops by once in a blue moon and thinks, "Oh, it's XX airport, it's pretty busy, they'll definitely have it'...
IJ, I'm pretty sure I know which airport you're talking about, no fuel NOTAM just does not make any sort of sense at all!!