Again, not, there are 3 elite posts in the Association and twice as many elite guards. And from what I've seen, Boston is the best post to leave college since Griner. Yes, elite PG's are hard to find, but in the last 3 years Sabrina, CD, Gray, and Julie Allemand have entered the league. How many elite posts have entered? One, and that would be Wilson. This also may have been Fowles last year, and Griner isn't getting younger.
Now your argument that teams have been winning championships without posts is a good one and the game has somewhat moved toward a more versatile, positionless game. But when you're the Storm and have such a talented player as Stewie it isn't necessary to have a post. However a player like Boston that can dominate inside and stretch to the arc is a rare player indeed. Plus as has been shown, in international play and the Olympics, big posts become important.