Not a fan of it myself. I've never understood this desire to avoid writing CSS wherever possible. It's not hard - at least not anymore - but this type of abstraction makes it hard, in my opinion.

On top of that, I think it's just a bad idea to pepper your html with utility class names.

That said, these days pretty much everything I do is React, and styled-components' ability to interpolate props in styles and attributes is pretty darn nifty.