A few things as I see it:
In a few weeks, youll be able to walk into virtually any retail store and see the beer in a box kits for the Christmas season. In a few months, Christmas wrappings will be waiting at the curbside while hundreds of thousands of new brewers are boiling away their new home made beer. The sheer availability of homebrew kits compared to wine kits lends itself to a sh!tload more beginner homebrew being brewed in neighborhoods and shared with friends and family.
There is a vast difference between beer that comes out of a Mr. Beer kit from a first time brewer and an all grain batch that has just been brewed by someone who has 30+ batches under their belt. In the last three decades (since Homebrewing was re-legalized back in 1978), most Homebrewing has been done in the form of kits and liquid extract
and a vast portion was brewed by new brewers who dabbled in the hobby, shared their product, then got out of the hobby.
I consider my beer servable to any audience
but it wasnt always that way.
Certainly high quality homebrew has been the exception rather than the rule the last 30 years.
Plus, there is just a different public perception between beer drinkers and wine drinkers. (Wrong though it may be)