I think that Pet Sounds has been well excepted as a hip LP by the Beach Boys. But I agree that the overwhelming image is of the surf and car era. A celebration of a more innocent time.
And also a celebration of a location and lifestyle unatainable to most English people....we make do with rain and cups of tea
The allusions to sun, sand, surf, big cars and fine girls are a huge part of why the Beach Boys were successful in the UK...not just the fact that most of the surfin/cruisin era songs are bloody good rock and roll melodies.
Diffeirent people are moved by different things. I can be emotionally moved by the Beach Boys, Beatles, Brahms, King Crimson, Duke Ellington to name a few. I wouldn't expect everybody to be moved by the same sounds. That doesn't stop somebody being a fan of the Beach Boys and the Beatles.