At that time he sure didn’t fit my idea of a “master”. But his book “Cutting through spiritual materialism” was a big deal in the circles I traveled. Early during his residence in the Weast, Trungpa was in a serious automobile accident. I think he was in pain and on pain meds for the rest of his life. He put away liquor which was often obvious in when he gave a speech or lecture. All this pain meant he was going to gave Americans an un-sober and distorted version of Tibetan Buddhism. There are many Tibetan teachers in America and Europe these days and they have a plain lifestyle
I am not a practitioner or anything. Just an observer.
I personally know several teachers born in Tibet who have never "sampled the big buffet." But they are monks so they have taken vows not to. On the other side of that coin I have heard stories of many monks who broke their vows in India and Tibet. I don't think coming to the west is much of a factor.