[dman]

That was kind of my point - the more starkly minimalist the workflow the easier it is to make it pixel perfect and look exactly as you intended.

[diffeomorphism]

So the parts of the UI that are i3/dwm scale. Everything else like email, browser, image editing, applications, the stuff that actually matter, doesn't.

Sure, if you only ever need a text editor you don't need to care about scaling anything but fonts, but that is not the case for most people and unrelated to which WM or DE you use.