The only thing that impacts what I think of a beer, is how it tastes...nothing else. If I like the beer then I will spend money on it, and drink it, whether it is from a mega brewer if I am in the mood for it, a craft brewery, a brew pub, or a third party contract brewer (Like Trader Joes and Costcos, uses many contract breweries including Gordon Biersch, and unibroue for their signature brews.)
I emailed Gordon Biersch's brewmaster once, and he confirmed they are all brewed under the Reinheitsgebot.
So if the beer is good, I drink it, if it's ****e, I don't, it's that simple. I usuallydon't give a flying frig if it is brewed onsite or a contract brewery, heck, wasn't Sieerra Nevada or Sam Adam's contract brewed initially?
Heck some micro breweries/brewpubs, simply don't have the space to brew all the beer that they want onsite, especially if it's a chain....as long as they have developed the recipes with the contract brewers, that is fine with me. Now if a place claims to be a brewpub, and has no fermenter on site, and no brewer who coordinates with the contract brewer, then I might have a problem with it, somewhat, but again, if I like the beer, I like it.
If you ask them and they say they contract brew and they are upfront about it, fine...if they hem and haw and don't admit it and claim they are a brewery/brewpub but are just slapping their na,e on someone else's beer, then I would have an issue. But I think that is probably a rarity...I think most places, including breweries that contract brew are pretty above board about it. Then I don't have a problem.