To play devils advocate for a moment....
The hub world design of Monster Hunter is what kept me away from that series for so long, as someone that grew up playing open world RPGs I always saw hub worlds as a design regression.
Then I bought MHW after finally being convinced to try it and I fell in love with the game, literally hundreds of hours sunk. The gameplay shined brighter than any of the perceived limitations that I had imposed upon it by merely peeking in from the outside and I kinda regret not getting into that series sooner.
So while it sounds disappointing that we're not getting our open world Pokemon game (yet), if the gameplay is solid enough I don't think it's worth getting wound up over.