Transferable skills is something I always try to keep in mind when deciding how to implement things.
By using css for styles - and sticking to the standards instead of adding a bunch of random new styles - we're allowing a bunch of people who already know css to make UI easily and intuitively.
For those that don't know about stylesheets yet, we're giving them a skill to learn that is transferable to the web (and anywhere else that uses css).
It's the same thing with our Razor templates. Anyone that has used Blazor can intuitively use our Razor system (granted - that's probably not many). But also on the flip side, I think the people that use Razor UI in s&box would be amazed to find out that they can legit make fully interactive websites now.