I only call it plagiarizing since he claims he invented all of those ideas and pretended no one else come up with it first. It's all marketing and there's no copyright laws from stuff in the 1500's but still...a stolen idea is a stolen idea damn it!
Page 244 of the Tao of Jeet Kune Do gives all credits to any work cited or of an idea transfered. No where in that book does he state the ideas are his. Why the accusation?