No offense really, but at what exact part of dr_67 is it "parkour slop" ? The only, if you can even call it that, parkour part are at the last three or so traps, and its simple jump and run? I'm sorry, but I remember the deathrun community being wayy more baseline skilled at everything.
On Miku I agree, most people assume that the activator gives a freerun on this map, simply because the map in itself is hard.
But if you ever played Dangerzone you'd know that the balance between parkour and traps is pretty even, it's not even slightly comparable to Miku or for example Technoir. From what I know, most people suffered at the "surf" part, and I myself keep realizing that a lot of the people playing deathrun now don't even know basic skill sets needed for tf2 deathrun. Parkour, if you want it or not, is part of the fundamental gameplay that is deathrun, which most definitely includes surfing.