There were times when an Amish woman was expected to say "yes" whether or not she meant it.
When there were issues to vote on in church, the only thing women and girls were allowed to vote was "yes."
For the women who happened to have a good husband, their role of being the submissive wife was no problem. Unfortunately there were some men that abused that power, and their poor wives did not enjoy a happy life.
I have nothing against the word yes, when used by your own free will.