Yeah, I remember reading that and I think part of my optimizing was sparked from it. I also have been feeling a bit disappointed about there not being more stuff to buy, but I think that is more of a hobby addiction. Because to be honest, I haven't finished DMing or playing my way through any of the currently published material except for the beginner's box LMOP adventure.
I feel for the people who have been gaming more often than we have though and are waiting for more material. I think the big priority for WOTC should be to get out their license by the end of summer so the rest of the industry can support the edition more fully and with full knowledge of what is legally sanctioned.
My fall back plan, should I run out of adventures from WOTC, and not create my own stuff, is to purchase and run old adventures and things like the Pathfinder superdungeon Emerald Spire. I haven't bought it yet, but I did manage to snag some copies of Murder in Baldur's Gate and the Icewind Dale one, etc. last year. So I'm pretty set on adventures now, and having more paperback adventures is less preferable to me than fewer hardbacck adventures.
What I really want is more stuff like in the just released EE pdf with more races, but particularly more subclasses and spells and so on. Hmmm, and monsters too. What I want for monsters is more special features for boss types, alot like the 4e monster abilities, but for 5e. I'm getting a bit off topic now though so I'll quit.