First, I love MT - I am a premium subscriber and have bought several of the products.
i can't help but wonder if some of this advice is "old world" or aimed at large companies (who are typically slower and there more "old world"). People are far more mobile than they used to. Companies are flatter than they used to. People are freer than they used to be.
That being said while much of MT is very good sound advice, it is also Safe, which is okay except when its counter to you or the organization you (and the org) seek to build.
Is MT best served in Very Large Organizations (VLO)?
For example, I hesitate going to my boss and HR group to question my effectiveness and how I can contribute better because of stigma. I'm a passionate well-promoted individual over the years (in a group of all managers and higher (I'm a director) in a multi-company/multi-divisional group I am the youngest). I don't want to appear whiny but I don't think I am wrong (nor would my track record support I'm wrong).
So...MT works but is it best in Fortune 500 type companies? And while it works everywhere, should some things be broken/challenge (in the right context) in the name of organizational improvement?