By this logic, no OS update in the entirety of the OS world could EVER be disappointing as long as there's bits of polish and even the smallest additions in each one, which is the point of an update in the first place.
Gotcha.
Seriously can we stop playing the silly semantics game! YOU asked the forum if it is a disappointment now that it's out, I answered your question.
I said
It's not revolutionary but I did not expect that, it is a good evolution of iOS5. So no it's not a disappointment for me its just a better more polished OS with a nice list of small but useful additions.
This does not remove the fact that an update can be disappointing just that this update is not in my eyes (which is the question YOU asked), due to the improved polish and many small but very useful additions.
If it was a bug fix or only had small but not useful additions then it would perhaps be a disappointment.
Just because you want it to be revolutionary and anything less has to be a disappointment does not mean I have to feel the same, nor does it mean that my viewpoint is as you suggest illogical.
For others with different needs who don't use the features like DND, VIP inboxes or live in an area with older maps that need updating might have a different view as they won't use any of the additions but that's fine.
For me I updated to iOS6 and it has made my devices better to use without any drawbacks, others might differ and thats the great thing with this forum most of the time, we can have informed debate.
Just remember Calidude everyone else does not have to be wrong for your views to be correct from your viewpoint on the world. Just remember this is true the other way round. So enjoy being disappointed with iOS 6 and railing against the system and I will enjoy iOS 6. We can both get what we want, just don't tell the other side they have to be wrong for you to be right