First for the season average record, Emeka had 4.7 per game one year, but only played in 31 games because it was the year I robbed him of half the year during the breakup.
Hinson was averaging 5 through half of last year. There's a reason teams play 82 games, not 31, and a reason why there's a minimum number of games to play to qualify for season averages
In the last 7 years, Mehta's blocks per game have been 4.4, 4.4, 4.1, 3.8, 3.4, 4.3, 4.2. I don't see a decline.
I think the only person you could argue against Mehta with would be Okafor.