Source: https://linux-hardware.org/?view=os_display_server
Reporting is done by users who voluntarily upload their system specs via
# hw-probe -all -upload
Well do you want useful stats or not /s
But seriously, a lot of opt-in (that never get opted in to) data is insanely useful for developers, but it has such a bad stigma that we never get anywhere close to the amount of usefulness a larger dataset could provide.