Meh, he's probably just one of those morons who likes toys with functional shoulders.
I actually still hear a lot of good things from 1/48 fans about that line. People like the air brake, wing flaps, longer nose in fighter, heft/size, etc. It all depends on what appeals to you... the 1/60 V2 is a great toy but it's certainly not SO great as to leave no room for others to prefer the 1/48s. The 1/60V2 GBP sure is nice, the only gimmick I don't like is the whole folding leg fins... it seems unnecessary and one more thing that could break. In the show the leg fins retract into the leg a little bit, if Yamato was going to insist on doing something with them I would have preferred they go that route (although I'm sure that would have been more troublesome). Otherwise, leaving them solid and making the leg armors a bit thicker in that area would have been fine by me.