I've learned that, for the most part, whenever Dave Hurwitz dislikes a Mahler recording I am most likely going to enjoy it.
Although I don't agree with every point he makes, he's right in that this recording was not needed. He tends to way over-state his gripes with things. He says that he likes the big col legno moment in the first movement, but it is so loud that it detracts from the main melody in the brass. I didn't find that to be the case at all; if anything, it's just that the brass isn't projecting strongly enough with their sound, and it's not a problem with the string players or the audio mixing.
However, I'm not going to complain about more Mahler recordings existing.