That makes sense.
What you will find, is that if you challenge yourself to learn more complex things in web design, you will become better with everything in general. So, if you learn:
- wordpress theme building
- basic php
- basic javascript
... Your overall ability to create great websites will jump. That realization (that having exposure to all these subjects helped) was one of the motivations for the Killersites University ... I wanted a one-stop-shop for people to develop all these skills.
There will be much more about this in the near future.