Everyone is free to use whatever method they like, but ultimately what you are proposing here is using presentational class names.

Is class=“rounded” any different to class=“red”?

I accept that truly separating content and presentation isn’t always practical or achievable. I can see the productivity benefits. It just doesn’t seem right to me personally, and it’s not the sort of idea I expect to see promoted on an otherwise progressive site like this.

Humf. As you were.