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 Parker’s earlier rendition of his system. Al Tracy had some articles about Sifu Woo’s involvement in the development of Parker’s 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 Woo’s 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. Parker’s system, they might be unaware of Sifu Woo’s contributions, as they were mostly edited out as the system continued to be changed by Mr. Parker.