Dan Rather is one of the old guard TV news reporters, back when they were actually journalists who investigated and wrote news, rather than reading corporate lines.
He was dismissed as anchor of one of the USA’s “big three” network news TV shows, CBS Evening News, in 2005, after his news team reported on a story about George W. Bush’s military service during the 2004 election season, which turned out to have some documents that were faked a source for some reason. Although Rather was mainly guilty of being in charge and trusting his coworkers to have fully vetted everything, this was spun into a story about Rather being terrible or conspiring to try to go after Bush. It continues to be a talking-point for alt-right types to villify and discredit Rather and whatever he might have to say that might be critical of Republicans or the right-wing. (Which as it turns out is a lot, especially with the Trump circus and the ridiculous depths to which the corporate news media has sunk.)
As for The Young Turks, I don’t have much patience for Internet news videos or opinion pieces. However the few times I have watched The Young Turks, I have been following links to stories I already agreed with, and was very happy to see someone outspoken about issues that don’t get attention in the corporate news media. Apart from being more on a rant than I think is effective for changing minds, and not focusing on reporting as convincingly as possible, I didn’t have major complaints about them. (I’d be curious to hear specific complaints others may have.)