[flutas]

> > Betty had a bit of butter, but the butter was bitter, so she mixed the bitter butter with the better butter to make the bitter butter better but it made the better butter bitter…

> ?

They are saying that taking a good thing and combining it with a bad thing, doesn't make the bad thing good. It makes the good thing bad.

I have no "dog in this fight" (side note, any better phrases to use there?) but just explaining what they tried to convey.