To be honest, I just don't care anymore about plain CSS, it is just an intermediate representation to me. This feels like bikeshedding over the syntax for LLVM IR.
Just add SCSS to the web inspector that's the only place where I'm still exposed to plain CSS.
Wildly different experience in that I'm back to writing plain CSS on many simple to medium complexity projects because these tools aren't providing me enough value for the complexity and dependencies they bring. I've not written Sass or SCSS in about 4 years now, and when I do bring a tool, it's a countable number of PostCSS modules to bridge some gaps for features that haven't yet been upstreamed to all browsers.
Just add SCSS to the web inspector that's the only place where I'm still exposed to plain CSS.