…get into the heavier development side of things or even just have handy as a reference.
Good, I find my skills outdated every few years. I get caught up in business and maintenance then wake up to see all the shiny new things. Sometimes I need to revisit the [updated] fundamentals.
It’s amazing how many designers end up developers. Partly a fault of WordPress, I think (and wonder how much theming with blocks will affect that).