Comment by sshine

Does your browser have a "Reader" mode?

There are font systems that target code and aren't monospace.

An example is Input: https://input.djr.com/ - https://input.djr.com/preview/

The niche seems to be people who like to code without monospace, or who present code without monospace, e.g. in slides or in blog posts. Or if you want typographical consistency between non-code and code, as I understand you are suggesting.