If you have the Roboto Flex font installed, it should now display as the main font for the wiki instead of your default "sans-serif" font. Issues with imports have prevented it from being installed on page load. Is it overreaching to do this without asking? Probably; but you probably like variable fonts anyway if you have it installed.
Of course at the time this is written, this only works if you're on Firefox. Because of course Google couldn't design their own browser to recognize their own font.