Earlier quoted context omitted.
See https://medium.com/alex-couch-s-portfolio/type-hierarchy-and... for some of them. The “blurry eye test” mentioned there is related to the typographical term of color (see https://bigelowandholmes.typepad.com/bigelow-holmes/2015/04/... and https://practicaltypography.com/color.html ) which is affected, among other things, by the actual shape of the glyphs. Font contrast has little to do, if anything at all, with a…
To be fair, though, the first comment that referred to contrast was clearly talking only about color, and had nothing to do with "topography contrast." The original comment was > Designers love grey on grey. I’ll take comic sans any day. These are two orthogonal features. It's like saying "fashion today is really into high waists, but I'll take denim any day."
Denim has a design style to it that goes beyond the material, as does comic sans. Like, you could put "comic sans" as part of a dalle prompt, and it would do more than pick a font