There were a number of “conservative” personalities from National Review that went down hill real fast after they announced they were against Trump. Names like:
Thomas Sowell
Mona Charen
Cal Thomas
Brent Bozell
Eric Ericson
John Podhoretz
They never recovered. It was career suicide.
In 2020, Sowell wrote that if the Democratic presidential nominee Joe Biden won the 2020 presidential election, it could signal a point of no return for the United States, a tipping point akin to the fall of the Roman Empire.