Did you actually watch that video?
I'll grant you that the headline sounds like Tucker is calling out Powell.
Keep in mind that at the time of that piece, pretty much EVERY news organization was mocking Giuliani and Powell for their unhinged and completely unsupported claims of a vast anti-Trump election conspiracy. Everyone, that is, except the right-wing media bubble, which at that moment was surging toward OAN and Newsmax thanks to the seemingly irresistible lure of having your own world view reinforced and feeling like *you* are special because *you* know the real story.
So yeah, the headline looks like he's calling them out, but if you watch it, it's pretty much Tucker being Tucker. I only made it through the first 5+ minutes (which is about 4 1/2 minutes longer than I can usually tolerate his firehose of bullshit), but he REPEATEDLY defends Russia. Paraphrased: "social media is more dangerous than Russia ever was," and also "Look at the silly news media saying that Giuliani was targeted by Russian operatives... Those morons are so stupid to see Russian conspiracies everywhere."
He also FLAT OUT STATES THAT WE DO NOT HAVE FREE AND FAIR ELECTIONS IN THIS COUNTRY, explaining that a "billionaire class" controls the media (which is a head-exploding level of hypocrisy).
Anyway, just fucking stop with the idea that Tucker is anything short of a Goebbels-styled propagandist who relentlessly 1) undermined faith in American institutions (as he does in that video), and 2) inexplicably and almost invariably repeated pro-Russian talking points (as he does in that video).
edit: he also repeatedly gives Powell and Giuliani credit for "raising questions" and he repeatedly legitimizes their fucking lunacy. In other words: That video most definitely does not vindicate Tucker Carlson in the way you seem to believe.