Any Lama who spreads the Dharma in such a capacity as Geshe Kelsang Gyatso deserves anybody's respect. This is regardless of whether we agree with some of his methods or not. If we were to criticize Geshe Kelsang Gyatso, we are like saying we can do a better job than him.
I am really amazed at his amazing books, that brings the dusty ancient teachings of the Great Classics into the light of modern simple English. The amazing great teachings of the Pandits of India and Tibet are suddenly accessible and available for countless people to read and study its deep meaning. I have not known of any other great teacher who has performed such an amazing feat thus far.
I am also amazed that his organization is all over the world and has brought the Gaden tradition and spread Dorje Shugden to over a thousand great centers all over the world. I am sure this Lama wouldn't stop finding new ways to spread the Buddhadharma and the Internet is just a wonderful avenue for the great Lamas, especially the younger ones.