Maybe there aren't too many bands that have tried to copy the Beach Boys' sound
Say wha?
You must be kidding with that statement. There were a million imitators of Brian's sound during the early-to-mid-'60s. Hundreds more after "Pet Sounds." And since that time, not only has his sound been a part of the musical lexicon, but it's influenced pop music to such an extant that we can hardly imagine not having it as part of our reference book for describing other songs.
The second half of the '90s had so much Wilson imprint on indie music, I can't imagine that not being recognized as a major part of that decade.
The number of bands that obviously tried to copy The Beatles is infinitely higher than the number of bands that tried to copy the Beach Boys...
Oh god, won't even fight that one.
A completely unnecessary comment