I feel like everything I said is being strawmanned. I never said (or even implied, I think) that Plaza is not strictly better than Village, or that you should ever buy Village over Plaza when universal edge cases are not considered. I said exactly what I said, that there are cases in which you would have been better off with Village than Plaza, given that you play optimally with both. Of course it is a universal edge case, I can construct a similar case in which Village is better than Worker's Village.
You should be wishing that you had made a different choice, not that you weren't given a choice to begin with.
There's no such thing as "wishing" in Dominion (unless you're playing Wishing Well). I won't be wishing I made a different choice. I'll be wishing the more likely thing happened, the one that I was playing too. I didn't make the wrong choice. The cards came up in the wrong order.
If I bet you $1,000 that you will not get a 6 when you roll a standard fair die, and you do get a 6, I won't regret making the bet, because I know I did the right thing. I'll be disappointed that it didn't work out, but if you offered to let me do it again, I totally would, because it's always going to be the right thing to do (unless I decide that losing $1,000 is 5 times worse for me than how good gaining $1,000 would be). If the ends justify the means, as you seem to be arguing, then there's no practical use of the term "optimal play", because the optimal play is (usually) only determinable in retrospect.