One of the main points of css optimization is not transfer size, but the time it takes the css engine to parse through a css file, and figure out where to apply

One of the main points of css optimization is not transfer size, but the time it takes the css engine to parse through a css file, and figure out where to apply those changes to the DOM. I think that while the described "reminification" method may not make sense in practice (as other's have said running minification process multiple times will amplify minifier bugs), Optimizing CSS, removing unused rules, grouping similar rules, optimizing selectors etc... does make sense, regardless of reduction amount in comparison to compression.