BMC beer sucks. Sam Adams sucks, purely and absolutely. I really, really do not like Sam Adams, and i'm a beer snob, sure. However, their beer is not that good. IMO it is only one step up from BMC. After all doesn't it get brewed in a miller facility? (could be wrong on that, but i heard they were contract brewed.)
Maybe at one time Sam Adams was good, but it sucks. Plain and simple.
Rogue. Rogue is what got me into brewing in the first place. I have made the trip up there from CA, and I loved the brewery its the best one i have been to, i had a great time. But lets be honest, Rogue makes some awesome brews. But compared to other breweries, they are surpassed in both quality and taste. I'm not knocking on Rogue here, i love rogue beer, however, there are some other breweries i like more (RR, jolly pumpkin, Ale smith).
Dogfish Head.. I kind of lump this into the same category as rogue. Good beer, crazy recipes, and a real passionate brewer testing the limits of feasibility. However, i have only had one or two DFH brews where i was like WOW, this is AMAZING. (world wide stout). However, in practically every style possible, they are surpassed by other breweries(except the crazy stuff).
in response to the original rant, i believe others share my tastes and opinions regarding these breweries, and I at least dont knock them i just realize there are better alternatives out there. And i wont ever turn my nose at them.
Oh yea ... STONE. IMO, the Vertical Epics are just not that good. And Stone beer in general, is probably lumped into Rogue and DFH. To me its just gone down hill or my tastes have changed. But the last time i had an Arrogant Bastard i was looking for the drain. their IPA's have been somewhat rough (though i could have had old bottles), and their RIS is a bit like soy sauce.
So i think the larger breweries who once headed up the craftbeer movement, have just inspired others to do it better.
Just my opinion.