I would definitely disagree with this.
I run the stt pro in 235/85 r16 as a winter/greenlane/field and work tyre. I've yet to come to a grinding Hal with them yet, and that includes pulling a trailer with a chipper across utterly sodden grass, and up steep mud tracks. Aired down, they were surprisingly good in the snow that we had during the winter, especially for such an open tread pattern, probably because of the sipes in them.
I do however find them loud and uneconomical when doing alot of tarmac miles, hence, with all this dry weather I've stuck.my old grabber at2's on, nearly 2 mpg difference, and lovely and quiet!
Each to their own obviously, but ill probably buy the stt again when these eventually wear down, they look the mutts nuts too!