Hubski is definitely a collaborative battle of sorts between mk, and me, and pretty much everyone who has ever given any input. The truly minimalist nature (not one of my strong suits, although it's getting better) is something that mk just....has.
It's not minimalist in the pretty web 3.0 way – where you just put whitespace everywhere and call it minimal. It's like...actually drilled down to an ultra-compact "this is all the information you need" form.
Some people love it and appreciate it. Others find it ugly or hard to use. It is less familiar than some sites out there, which I personally think is a good thing.