I don't know to what degree there's truth in it, but Marion Koopmans has been in hot waters over her connections to the Chinese government. Last year, she has also publicly stated that the search started too late, and that they have negotiated about the outcome with the Chinese government (e.g., https://www.nrc.nl/nieuws/2021/03/30/een-goed-resultaat-a403..., paywalled).