In the time I spent training in the Tracy lineage, among the people I worked with, Sifu Woo was always held in a position of respect as a contributor to Ed Parkerās earlier rendition of his system. Al Tracy had some articles about Sifu Wooās involvement in the development of Parkerās kenpo, on his website. When the Tracy brothers split from Parker, they kept the older system and did not update as Parker continued to change things. This probably gave them reason to continue to recognize Sifu Wooās contributions.
I do not recall anyone from the later Parker-derived lineages expressing disrespect for Sifu Woo, but my only interaction with them has pretty much been through the Internet forums. It seems to me that Sifu Woo simply does not get mentioned in those circles. Having trained in the later iterations of Mr. Parkerās system, they might be unaware of Sifu Wooās contributions, as they were mostly edited out as the system continued to be changed by Mr. Parker.