The film doesn't really bother with an explanation for the Legendary Warriors (for that is their actual name, "Dinobots" is never spoken) existing, let alone their particular designs. They are just in the right place to be recruited by Stabbimus Prime so they can feature in the traditional last real smash-fest.
Now then, I know they aren't everyone's cup of tea - I tend to find myself wishing for what could have been whenever I watch them - but surely just one watch? a little tinsy watch? At least Dark of the Moon, it's the least offensive of them. Surely you have toys from these films? Do them the honour of seeing them in context... or is the prospect so abhorrent that the shrinkwrap will stay forever on?
If it were entirely hasbro, I'd think maybe you have something. But most movie bots don't have names until hasbro gives it to them. And I suspect that the dinobots (grimlock aside) fall into this bracket. Especially since there were so many trademark hurdles.