Maybe it's because I've been there a few times, but this area is
dominated by bluffs and cliffs into the ocean and mountains with some coastal plains. There
are valleys, technically, but it's not exactly the main event. Looking back at the track, the course is nearly entirely along bluffs and doesn't seem to include anything resembling the actual Big Sur Valley. To me it would be like locating a circuit in Central Park, New York, and calling it "Deep Forest". Yes...technically there is a wooded area there, but it's not really the prominent feature.
It's just weird to me. A valley is a long, low-lying area surrounded by mountains or hills on both sides. While these are part of the central coast it's not a really apt description of the region from a macro level, which from Pismo to Monterey is nearly entirely bluffs and cliffs and mountains on one side and the ocean on the other. When I think of a truly identifiable valley, especially "Grand", I think of ones like
The Central Valley
Napa Valley
Salinas Valley
Silicon/Santa Clara Valley
In all of those, the "Valley" attribute is the most prominent geographical feature around.
View attachment 1234241
I've drawn a red box around big Sur (and surroundings) here with the terrain showing. It's a rugged mountain range that plunges into the ocean. It's represented well in that respect by the circuit. In blue, I've circled the Big Sur Valley - really the only area along highway 1 where the road is actually surrounded by hills on both sides. If you're looking at this I think it's pretty obvious that calling this area "Grand Valley" makes zero sense. Yellow highlighted areas are actual valleys prominent enough to be identifiable on a map and named - with the Salinas Valley being the one closest and the very grand Central Valley off to the right (which extends 50 miles wide to the Sierra).
I'm not mad it, but it just seems incorrect.