I don't want to spend even tiniest amount of time for CSS or spend few cents with AI for it either.
This is similar to badly designed sites make you click more than once to get a job done while once click is enough. (as It'd force me to style around his crappy site)
"Universal acceptance" seems remarkably citation-free. AI cites back to Baymard which doesn't provide any actual published research article indicating the results.
Firefox's reader mode allow you to set the line length. If the reader-mode is able to understand the page it should be able to increase the length as well?
> "Universal acceptance"
Looking into it bit more I concede there's no real research consensus for optimal range in the 50-100 character range. I could not find research for the 180 char length this site render on my laptop screen at reasonable font size.
(Research indicate that bigger line spacing is beneficial for long lines though.)