If that is true, it is an incredibly shortsighted and foolish belief.
The objective should be to achieve the policy positions of the Democratic party, regardless of which party is currently in power.
The way to do that is to promote our policies when we are in power, and to push the Republicans toward our policies (and away from their lunatic fringe) when they are in power.
Allowing the Republicans to constantly run further and further away from our positions makes things worse, not better. I am honestly horrified that Democrats could possibly consider this a good thing.
I think and I hope your vile argument misrepresents the Democratic party position.