Getting back to the topic ...
I sympathise with the blogger. If the only Buddhism I knew was the kind he describes, I would probably leave too, and for similar reasons.
And I don't think he exaggerates the problems, or not much. I don't know about Malaysia but I have seen and read about similar lay practices in SE Asia and China (look at the Kuan Yin thread here, for instance).
His decision parallels the way Westerners have drifted away from Christianity as science has undermined more and more of its doctrine.
Sincere, thoughtful Christians have been trying to work out a way for science and Christianity to co-exist ever since The Origin of Species
was published. Buddhists are now working on the same issues.