I like this review. Some would probably criticize it for not being specific enough in telling WHY you don't like it, but I disagree. Sometimes I feel the same way: This just isn't the way it ought to sound. Why? I don't know. Maybe it's based on previous listening to a certain work.
In the case of Rattle's Mahler, I have not heard very much of it, but I do remember hearing the 2nd symphony and not being impressed. I would ask the reviewer what conductors' Mahler he does like. I also would hope that Rattle's Mahler has not discouraged this reviwer from listening to Mahler. Have you tried Tennstedt's Mahler? Inbal's? Both sets are currently available at quite inexpensive rates.