CBS got pressured by a regulatory agency (federal communications commission) to not air Talarico’s interview under some bullshit (radio and public tv broadcasts are supposed to give “equal airtime” during elections to political rivals to avoid the partisan bullshit we see with our media.)

Talarico is currently in a primary election for us senate in Texas (a primary is against other people in the same party, to decide who that parties nominee is)(his competitor, is Jasmine Crocket… who is an amazing woman, I’d be happy with either but I want Crocket.)

He’s also a pastor who’s been calling out Christian nationalism and advancing fairly progressive causes., and scaring the shit out of people that are of a Nazis persuasion.

So, CBS said they couldn’t air that segment.

So instead Colbert dumped it on YouTube.

The YT video has gotten 6.5 million views, which for perspective, they would have expected about 2 million if it aired.

So this is another example of censorship going wrong.

Adding to FuglyDuck's good explanation, there's another element. Not quite all broadcast (over-the-air, non-cable television, i.e. publicly accessible for free) TV follows this rule, as talk shows are co sidereal to be entertainment and are excluded. So the FCC threatened to remove the exemption for talk shows, meaning CBS wanted to play it safe and not risk the government making this a problem, even though it's not (currently) against the rules.

It is a California government coastal erosion photo that included Barbara Streisand's house. She sued to remove it from the internet because she believed it was an invasion of her privacy.