[DamonHD]

Yes.

And in the extreme case one customer (or a competitor on the sly posing as one) decides that one minor (mis)feature that they don't like is a bug and doesn't accept any fixes to it as adequate, what do you do?

Overserialisation of life (and other extreme position taking) is unproductive. Some new things will happen while others get fixed or not. Sometimes you won't even know how to fix 'bugs' without trying new things out.