Based on long time devotion to principle. Not situational circumstances.
It's an opinion piece by one of it's editors.
And the magazine itself didn't just decide Trump was a problem....
From your link:
The National Review is a storied conservative publication first founded by Republican activist William F. Buckley in 1955. However, it has had a rocky relationship with Trump since 2016, when it
dedicated an entire issue to persuading Republicans to abandon the eventual 45th president of the United States.
So, this is somehow something NEW ????
You moron.