It's unlikely, as flatpaks are more isolating from the rest of the system, and HydraVeil uses systemwide resources. Also they are generally served up by the flathub repo, which is outsourcing our security to Fastly CDN for little benefit
Discussion
Understandable although I think it's still possible and you can have your own repo. What about #appimage packaging?
Also, does HydraVeil defeat fingerprint.com?
It's possible yes, but people typically use their flatpak repo to standarize it.
And yes it gives different fingerprint ids to fingerprint-com