Heidegger and other existentialists admit their debt to Buddhism. A critique of the philosophy of existentialism may also apply to similar points in Buddhism philosophy. However, using language, writing books, etc. involves the use of reasoning and logic. The most consistent Buddhist is the one who refuses to speak. The Buddha himself when confronted with a contradiction would only answer in silence.
Experience is what matters.
The World's Religions. See Chapter 5. The Pantheism of Alan Watts. Clements, R.D. God and the Gurus. The Promise and Peril of the New Orientalism.