Obviously, this is not the skeleton theme, and has been minified, but the use of the viewport is in line with what the skeleton does.
I don’t follow this sort thing enough to know which opinion (to use minimum-scale or not use minimum-scale) is most reasonable, so I thought I’d point it out for discussion.
Not exactly convince of Edge DevTools ‘reasonableness’ for it’s advice (or webhint.io either; ahrefs uses it too, and some of the recommendations I find questionable).
Clearly maximum-scale=whatever and user-scalable=0 are not a great idea. I’m surprised that even the presence of a minimum-scale value (regardless of value) throws a warning—the browser default is 0.1.