While I agree the right gets more of a pass, the capitol does actually have its own cell network and they did bust people whose phones were connected inside.
The major difference between January 6th and Portland was that on J 6 the police presence was minimal while Portland had paramilitary outfits roaming the streets.
HBO told the show runners(D&D) they could take as long as they wanted to finish the series. D&D had just landed jobs at the helm of a new Star Wars trilogy so they were eager to wrap up Thrones and start raking in that Disney cash. They made the last season shorter than other seasons, it sucked and they ended up losing the Star Wars deal.