from https://ncac.org/resource/what-is-censorship
"Censorship happens whenever some people succeed in imposing their political or moral values on others by suppressing words, images, or ideas that they find offensive."
from houstonchronicle.com
"Sen. Richard Blumenthal, D-Conn., called it “an offense against the First Amendment interests of all of us.”" (The White House took retaliatory action against Kaitlan Collins)
"The courts have refused to recognize an overarching “constitutional right of access” to government information."
"...journalists do have a right not to be retaliated against, regardless of what form the retaliation takes."
from pen.org
"WHITE HOUSE’S WITHDRAWAL OF JIM ACOSTA’S PRESS CREDENTIALS FURTHER EVIDENCE OF REPRISALS THAT VIOLATE THE FIRST AMENDMENT" (their caps, not mine)
"The First Amendment protects our press from having to operate under the cloud of such intimidation and threatened reprisal. Our lawsuit is an effort to affirm that fundamental principle, and ensure that no one—not even the President of the United States—is given free rein to violate the Constitution."
My thinking is based from clear explanations such as these here. Your descriptions are exaggerated and hyperbolic. I have not seen a claim that the president must answer a specific question or pivot for that matter. So, saying : 'never mind that, next question' appears to be acceptable.