Oh, that is not hard to believe.
But then again all of our text messages, all of our computer interactions, all of our emails etc are being monitored. The only question becomes do you poke up out of the sea of noise to become noticeable.
If you are a gentleman like Mr Carlson you most definitely poke up. It wouldn't surprise me at all if someone wasn't sent to apprise him of the NSA / government's interest. If he's not careful, and keeps speaking about things like election fraud, he might have a "accident" ...
Any pretense or belief that that our systems are functioning as the Constitution intended is long gone. The fact that the FISA court exists, that it was wantonly abused, and that nothing was done to hold those who abused that system accountable is all that any of us need to know.
At the national level we are very close to rule of law only for those who are of no interest to the federal state. If you reach the point of being of interest to the federal state, you can expect secret courts, gag orders on those service providers who are strong armed into surveilling you, refusal of service from those which could assist you, and very likely prosecutorial abuse to ruin your life.
We are all too close to Berla's police state since Big tech cooperates with big gov, show me the man and I'll show you the crime...
Oh, the reality that government is using corporations to that which would be unconstitutional otherwise...