Dear Pehar,
Neither do I have any problem with you taking the advice of the Dalai Lama not to practice Dorje Shugden. Why the Dalai Lama should be the totalitarian Guru?
One of the beautiful aspects of Buddha teachings is tolerance. To this regard, I remember some words of my guru: "Buddha wants happy people, no Buddhists. Emptiness, karma, rebitrh, etc are not Buddhists or Buddha inventions; they are truths that always have existed, but Buddha realized that. Ultimately speaking, Bhuddha is not showing us "nothing new", he is showing us things or phenomena that always have been there, and His teachings are for everyone, no matter his social status, race, religion, beliefs, gender, etc etc...". The importance of his teachins is how we can handle our life to this phenomena, how can we abandon our delusions related to those phenomena, how to walk the path and to complete it.
Honestly, your words sound as those of a dictator, your words reflect disharmony, sectarianism, lack of religious freedom and intolerance. And as a result of that kind of actions and wrong views, today the buddhist practitioners, lamas, sangha, lay tibetans, etc are experiencing suffering. This is the result of such advices like yours.
Regarding to the history of religious intolerances: "The country (in other words we can say the people) that has not learned from its history (their actions), is condemned to repeat it."
Vajra