Good democracy:
- fierce competition in the election
- choose winner
- work together as much as possible to do what's best for the country
Replacing step 3 with "do as much as possible to obstruct the winner and hurt the country until we win again" is stupid. It slows us down and weakens the functioning of the democracy.
Nothing wrong with anyone saying "We are fully against policy X". There is something wrong with "We are fully against policy X, so we will harm unrelated things: Y and Z (the economy in this case)".