"YEAH I wanna give everyone magic, but it's inevitable anyway, so LOOPHOLE! WHOO!"
Panel three brings up a pretty important distinction. As the second-to-last panel indicates, Diane is considering the possibility that maybe everyone learning hot to use magic isn't inevitable, but everyone is in agreement that it's more likely a matter of "when" rather than "if".
The real question here is whether this information should be shared before it absolutely has to be.
Which I hope was effectively just a recap of what this page just established, and reading that part of the commentary wasn't an "oh, NOW I get it" moment, because if it was, it means I could have made that clearer on the page itself.