This leads to a proprietary site (they recently abandoned Free software):
The document was made on a proprietary operating system using proprietary software:
Summary: Today (or earlier this week) the Linux Foundation boasts about its "community" (Microsoft and other Linux-hostile corporations it fronts for); it probably doesn't want readers to know that its rejection of both GNU/Linux and "Open Source" is showing (the Foundation is not run by people who support Linux, they're just exploiting the brand)
That gives Google far too much power over its rival... There are already many sites that refuse to work with Firefox or explicitly say Firefox isn't supported