I've never seen many active Buddhists on forums. My city has a few temples, and most seem to be organized more by country than sect. For example, there is a Buddhist temple near me, and it's known as a Vietnamese Buddhist temple. It may well just be a factor related to language. I've been inside one Buddhist temple, a large one out on a large area of land, (quarter section) about 40 miles outside the city. The monk there couldn't communicate in English. It has large standing statues, and will one day be really special. The gardens are massive. There is also a very large monastery on PEI, and of course, elsewhere.
As with Hinduism, I trust the immigrant population much more that western adoptives regarding authenticity. Adoptives tend to carry more baggage. As with Hinduism, there is a language barrier.