Comment characters, and compound operators without ligatures, are ground glass in my eyes.
The first thing I checked for here was ligatures; this font would not have gotten five seconds of my time otherwise.
If one doesn't want ligatures, one turns them off. No one should design a programming font in 2020 without ligatures, just like no one should design a programming language in 2020 without a language server to handle editor services.
In a language like Haskell with many compound operators, the code just looks stupid and irritating without ligatures.
I may be at one extreme here, for I absolutely loathe comment characters. I've programmed preprocessors for each language that I use, with defaults that flush left is a comment (to be appropriately syntax colored, and with a convention for blocks that include indentation) and indented is code.