Probably Trump voters are tuning out. Considering that tv news has become unwatchable (and bear in mind, I sat through the entire vice presidential debate without a problem) I think it is possible that people are just streaming other content and going about their lives. This solution to unacceptable bias in the news is a workaround, so they will hopefully show up on election day because things have gotten so batshit.
This election is about turnout. Trump voters will crawl across broken glass to vote in person. Biden voters are ho-hum about him and need the he won’t lose polling narrative to turn out by mail for the most part, where ballots will be late, unsigned, filled out wrong and let the Bush v Gore fiasco play out in 6 states. So Trump in a questionable squeaker with lots of doubt and conspiracy theories.
A Trump win is better than a Biden win for the TV News ratings & business and a questionable month long election counting is really good for business too. All about ratings and advertising revenue to them. Demonize Trump for 4 more years and set the 2024 narrative.