Actually, you are doing the exact thing you criticize. You are suggesting to prescribe your personal preference to users, while they argued for not doing so and letting the user choose, while leaving it unspecified, how the user is supposed to make that choice of viewport/content width.

I much more sympathize with them tbh. Let browser makers figure out how to give the easy to use controls to users. Let them add some override for the number of columns and columns max width and gap and so on. Or let extensions handle that. Whatever. But don't rely on each site prescribing how I have to read it.