Offtopic and sorry but I have to let this off my chest: Substack's spectrum typeface has too much letter spacing and it leads to poor legibility. Your brain rec

Offtopic and sorry but I have to let this off my chest: Substack's spectrum typeface has too much letter spacing and it leads to poor legibility. Your brain recognizes word shapes as whole and the more space you add between glyphs (this is not kerning, which is between specific pairs of problematic glyphs), worse the legibility. Typeface looks clean when you do it and perhaps great for display use, but absolutely horrendous for reading long prose. Substack has one job. Any typographer worth their salt would chuck this typeface out of the window. It is not a subjective matter. If Substack design team cannot afford a typographer, they should be using many excellent typefaces out there for free such as Source Serif Pro.