The way I see it, stats like blocks are just like plays like "goes inside and switches hand mid-air for a dunk". They only have very little to do with the game ENGINE. they're part of the game viewer, or the viewing experience if you will, and that includes the box scores.
So it may very well be, that despite the effectiveness of shot blocking increasing in terms of FINAL SCORE, it has no visible impact anywhere else.
If you think it's stupid, well, yes it kind of is, but that's how this game is built. A program takes a few parameters for a game like the outcome, the final score (hopefully) and half a dozen (probably) other things like average level of starters and bench, probably weighted towards starters, and from that it just "invents" a scenario and presents it to you as what happened.
The main point is, box scores and game commentary and shot charts don't probe the game engine at different moments during the game to see what happened and report it to you, don't necessarily respect the same basketball philosophy the GE uses.
That said, it's probably a good idea, if they're going to increase the importance of shotblocking, that they change the box scores, especially individual ratings and player matchup opponent's ppp. Increasing blocks per game, doesn't necessarily make sense though: maybe attacking players have an exaggerated tendency to avoid shooting close to a shotblocker, plus, a shotblocker can make you miss without actually blocking the ball.
"Air is beautiful, yet you cannot see it. It's soft, yet you cannot touch it. Air is a little like my brain." - Jean-Claude Van Damme