"...various forms of the caste system are practised in several Buddhist countries, mainly in Sri Lanka, Tibet, and Japan where butchers, leather and metal workers and janitors are sometimes regarded as being impure. However, the system in these countries has never been either as severe or as rigid as the Hindu system and fortunately it is now beginning to fade away. The exception to this is Nepal where Tantric priests form a separate caste and will neither initiate into their priesthood or allow into their temples those of other castes."
Read what you linked to again. It says Brahmanism was a caste religion. It then goes on to say "The Buddha, himself born into the warrior caste, was a severe critic of the caste system." Then "Even during the time when Buddhism was decaying in India and Tantrayana had adopted many aspects of Hinduism, it continued to welcome all castes and some of the greatest Tantric adepts were low castes or outcastes."
It then states that "despite this, various forms of the caste system are practised in several Buddhist countries".
"Buddhist" countries having castes is not the same as Buddhism being a caste religion. Buddhism is not a caste religion.
>"Buddhist" countries having castes is not the same as Buddhism being a caste religion. Buddhism is not a caste religion. //
The practical effect is largely the same though surely. Like a majority Christian country having racism.
How does a caste system survive in a country where the majority of adults oppose it?
I suspect the answer is "it doesn't". People who label themselves proponents of a particular religion often don't follow it's precepts, traditions or philosophies.
http://www.buddhanet.net/e-learning/dharmadata/fdd53.htm