I have seen various brands of turntables with what appear to be Project and Rega tonearms. Many Music Hall turntables are manufactured by Project. Many ads for vintage speakers will include mentions of being built with SEAS, Scanspeak, or Vifa tweeters. Some JBL electronics of the 2000's were clearly repackaged Arcams, a Harman sister company.
None of this is bad or good. What matters is what comes out the other end and if the purchaser is happy with the outcome.

