Well, if nothing found at TOC counts as quirk, there is little quirk to be found anywhere. The place not only has blind shots, but has greens the size of American football fields, shared between two holes, you play over the edge of a hotel, chip off a blacktop that's in play with no drop, end up in bunkers - even in the fairway - where the only play is to go out sideways or backwards, etc.
To be honest, there are many places in Scotland and Ireland that have many more blind shots - shots that are also far more blind. Prestwick, for instance, though there are courses with even more blind shots than it offers.
I think people tend to equate quirk with "something that deviates from the norm as I understand it". Thus American golfers tend to regard blind shots as quirk because they are much less frequent here, and they hear their fellow less enlightened golfers grouse about any such shot at any opportunity. I doubt our members from the UK would regard blindness as quirk, but perhaps might regard a course that demanded an aerial approach on all 18 holes as quirky (but see below
) Most would regard double greens as quirk, because even though TOC is the first and most famous course in the world, that is something that few other courses have copied.
Keep in mind that when we talk about quirk, we talk about quirk as a positive attribute, or at least not a negative attribute. Quirk can make a course better, or not, but won't make it worse. If a course has attributes that deviate from the norm that make it worse then its not quirk, its crappy architecture