I agree, Chrome on Windows 7, I cannot see a single word in that article or that website. May they should have done some basic testing before using that nice font.
I do have encountered issues multiple times with these new web fonts on Win 7 before, though; it looks like Microsoft changed their rendering engine quite a lot in Win 10.
Again, I think this is a fail of the font providers (they should test), not the users.
Well, learned some new things today and now I'm better for it
Have a great weekend