Not at the expense of but rather in conjunction of the release of longer travel posts. The "lower" portion refers to the lowering of BB heights, not standover.
I wasn't referring to stand over, and agree it is referring to the BB. One of the issues with the new geometry in my opinion is people 'sizing down' to get a reach they are accustomed to. So a bike with similar reach in the new geometry will have a much shorter seat tube than a bike with similar reach in the old geometry. This is going to make for the necessity of long dropper post to make the bikes fit appropriately.