It's the "amateur" part that is the problem. Not being a trained musician, and barely able to read a score, he has to learn to conduct from memory and by rote. I've never played under him, but I've talked to people who have, and while they admire his dedication and love of M2, rehearsals can be quite frustrating at times. The 2nd is a relatively "simple" score, for Mahler anyway. Imagine the complexities of 3, 5, 6, 7, 9! He hired a 3rd tier conductor to help him with his initial foray into M2 with the LSO and has made a career out of it, but that in no way qualifies him to make a cycle. To trained musicians, nothing is more excrutiating than having to play with an imposter on the podium. Bobby MacFerrin and Danny Kaye are enough! THere's more to conducting than standing up and waving a stick around. Nonetheless, I am very grateful to Mr. Kaplan for what he has done for Mahler, just stick to M2.