That's purely speculation. I can also speculate that by letting Republicans win, the spineless Dems are just gonna join the winning side and swap over. Plenty have already done so or became libertarians who are just mini republicans. If popular support is on the side of the more extreme right then everyone moves further right. You can literally see this effect in CNN where they have increasingly worse narratives sliding towards the fascist right.

By the way the same Republicans are portraying the LGBTQ community as associated with groomers and also happen to have the gun nuts on their side. At least democrats don't actively do that. Republicans have been sliding real fast towards an even more extreme right ever since the trump presidency.

But sure both are equal and let's not vote and let Republicans win every seat. Definitely not gona have a worsening affect marginalized communities.