Agreed, partially

I don't think there's much of a problem with this if the majority of the focus is still on the non-legendary cards and how they are used.  Since that's what I've gained the most from watching the HS dailies right now. (Like the use of equality and pyromancer.)  I don't want to make it sound like I think he *shouldn't* use legendaries though.

In fact, at his level there's a nice chance he'd probably lose a few more games each daily if he didn't use them.  Plus seeing him use the legendaries is still pretty helpful for everyone because pretty much all the way up and down ranks 20 to legend everyone has legendaries now.  It gives you some idea of what to expect and how to deal with them when they appear.