At least, as of December 2022, VRChat debunked rumors that they were not using ToxMod (at the time). Though, Photon is now one of Toxmod’s partners, and VRChat utilizes Photon for some services, if I remember correctly.
This is a good question that would be worthy of having answered. It’s already part of VRChat’s privacy policy that information collected from you might be used, as an example, for a moderation report.