Maybe it is just Gogol fans.  I have been to the 930 plenty of times, and have not had to deal with this supposed epidemic.  
I have dealt plenty with the tall person issue.  But what can you do?   I always try to move over some and get around the issue.  
Also, if i was Orcha sized, I dont think i would be out at a show.  I would probably be sitting at home eating a pizza and playing World of Warcraft.
As for a fat tax, what about those of us who responsibly eat fast food etc?  I maybe eat a burger once a month, and i would hate to pay more because some government official thinks it is a good idea.  Why not tax health food then?  Thats the real issue right, money?