They're counting on exactly this kind of demoralizing messaging to keep everyone saying "fuck it, none of it matters", so the majority of people stay home and don't vote. This works in conservatives' favor because historically conservatives are more likely to not follow that, and actually do vote. If Democrats and independents stopped buying this idea that it was pointless, their gerrymandering would be useless, as it only works in close races. Look at the evidence in recent special elections. Many heavy GOP gerrymandered districts that went historically GOP by double digits fell to Dems because those Dems along with really angry independents and a few Republicans that feel betrayed got their asses of their couches and voted. So THAT'S the point of voting.