Much like you, this guy has called the President of the United States, a traitor! He's a disgrace to the United States and doesn't deserve to have a security clearance while Trump is President! You can call it revenge, I call it a very smart business decision!
Brennan just said the truth in this instance... that was treason. Somebody has to say it. Do you have a better word for what happened ?
Other prominent officials have said the same thing in slightly milder, but still harsh terms. For example, Chuck Hagel, Ash Carter, Clapper, Hayden, Albright...
So it's not just one lone critic and you know it. So he's going to have to revoke a lot of clearances.
In fact, the whole of Senate rebuked 45 over the incident:
Senate fires bipartisan Russia warning at Trump
A 98-0 vote.
Even GOP could not endorse that level of treason AND treachery.
The Senate had to step in to make up for 45's lack of spine-bone.
Brennan doesn't work for the current administration, and he does not have to swear allegiance to the president. He is free to speak again. High-ranking officials like those from the intelligence community generally take an oath along these lines: "support and defend the Constitution of the United States against all enemies, foreign
and domestic"
(emphasis is mine)
Yes, Trump is a traitor. But in my opinion GWB is a traitor too. Obama too. Nixon too.
But as far as we know none were acting on behalf of Moscow.
Here we are at a completely different level where personal and foreign interests prevail over American interests.
Don't worry, there are people paying attention. Obviously you aren't one of them.