I'm probably in a tiny minority, but I just flat out disable third party fonts. Everything looks equally good to me and I save bandwidth. The only expression are image fonts, which render as squares - I share the author's frustration.
Third party fonts are a privacy nightmare, especially when you know who's the biggest third party out there. But there's no good reason to source the fonts from a third party either: you can host them by yourself and serve them with the rest of the website.
Now disabling custom fonts altogether makes sense of you are trying yo save bandwidth, but then you aren't mad if things don't properly align.
