2 more potential things to check : digital artefacts on teeth and between hair and background
Now they know what to improve ... Next round will be more difficult ...
Brave claims to be a privacy oriented web browser. It is apparently based on Chromium and someone identified a Chromium feature that was phoning home (I.e. Google servers) with some informations reducing user anonimity
(At least that's what I understood from a quick look)