Hmmm.....
See, for me, Optimization is an intentional attempt to achieve 100% power in a specific concept. key words to me are INTENTIONAL and 100%. Optimization is trying to make the best. If its not the best it can be, it isn't optimal! Isn't that what the word means? People who don't optimize can quite easily "try to make a good" or "happen to have some best things". If a 20 STR fighter is optimal, a 18 str fighter isn't 'kida of optimized' or 'optimized to a degree' nor is he 'poorly made' or 'sub-optimal', he's just a pretty good fighter. This happens, it is natural and good. Players should feel free to make good characters without the head-ache of "is this the best possible combo". A non-optimized character can certainly have some of the same qualities as an optimized character, an optimized character simply is REQUIRED to have them (or else it isn't optimal!), and non-optimized character has what-ever the maker wanted.
Optimized does NOT mean the same as effective, good, efficient, playable. Optimized is the best, or at least trying to be. Accusing people who simply made effective, good, efficient, playable choices of optimization renders the word meaningless. Save optimization for describing the level 30 orcus killer, on the wizards who can give the BIGGEST penalty to saving throws., or the mage/fighter who can get the maximum benefit from its classes. Then the word will have meaning.