I think they made the right call on that. It's unclear to me whether hiding the OS is even possible. There's just too much OS-specific behavior that happens inside (and outside) a web browser. It's hard to account for all of it.
OS rendering differences can likely betray you even when canvas extraction is blocked/noised. At least one tor-browser dev has publicly confirmed that you can't even hide the difference between X11 and Wayland[1], nevermind two entirely different OSes.
OS rendering differences can likely betray you even when canvas extraction is blocked/noised. At least one tor-browser dev has publicly confirmed that you can't even hide the difference between X11 and Wayland[1], nevermind two entirely different OSes.
[1] https://forum.torproject.org/t/linux-is-it-alright-to-run-th...