I don't get why people think Google Maps is infallible... because it isn't. Far from it. I've had Google Maps want me to turn into oncoming traffic or turn into roads that don't exist that would end in me driving over a cliff, or simply being flat out wrong about the location being 20-30 miles off course. You really have to use your head when using a GPS. You need to pay attention and not rely solely on an infallible system without any regard to your safety. Every single GPS available has issues ... and will probably continue having issues for years to come. There are places in which Apple Maps is more accurate than GMaps and vice versa. I also use TomTom, Waze, and a good ol' paper map booklet. The whole which GPS is superior debate is getting tiresome. I use several GPS apps because they all suck with accuracy at some point.
When some stupid error like the one in the OP is brought up, it's over-exaggerated beyond belief. I think the bigger problem than the GPS inaccuracy is the idiots who built the airport don't have that area gated off. Also, I've had a LOT of freaking issues with GMaps directing me to wrong parking terminals at airports, among other things.
All the GPS apps have issues. Use them with care and pay attention so you don't get into some horrific accident from their intermittent failings.