I’m totally stunned you would not even consider for a minute the ~10% of people who are colorblind (not part of that group, but always aware while creating visualizations as a scientific writer)
That seems pretty out of the scope of this article. An article about accessibility can be covered separately and most accessibility articles already recommend that color isn't the only indicator, so a warning/error is still distinguishable with icons & shapes & text.
It's kind of discouraging to see insinuations that the author doesn't consider certain people because an article doesn't explore and include caveats for everything.
I am part of colorblind groups. People loves mixing green and red in scientific plots in papers I read. It's effing irritating. 10% is not such a small number, we are many more than IE users.
