I agree, in a way. It's excessive... but for anyone that's having trouble finding another CC or Destro in stores, with the more that they release, it at least raises the chances that someone won't walk away totally unhappy. It would be kind of nice if they were the versions they released at the start of the line, though.
And for me, I'm kind of collector crazy, that way - I'll be buying them when I see them. And if I see two of the Iron Grenadier ones, I'll likely buy two for that "army builder" thing and sell or give away the extra Destro.