I usually assume when Europeans complain about American beers, they just are complaining about our “domestic” beers like Bud Light, Coors, PBR, etc. which makes sense, they are our bottom shelf beers.
I recently chatted with someone at a party who said “no, all American beers are bad” including microbrewery beers.
I’ve never been to Europe so I wouldn’t know, but I do like my Left Handed Milk Stout, NWPAs, and hell even the hipstered out IPAs.
Are these what y’all are referencing?
As a vetted german beer enthusiast, may I say that the big-brand beers are on average as good (or bad) as the american beers I know. Differences imho originate from drinking preferences (light beers) and allowed ingredients or additives, but that has a minor impact on sensory quality. Personally I often missed aroma and bitterness (hops) and gravity of most beers I tried in the USA, but that‘s just me.