Jonathan Chait disagrees with the AP analysis and agrees with Trump.
I think you are overstating it when you say Chait agrees with President Trump. Yes, Chait has bee explicitly anti-Marxist in his own writing, which is part of why he criticizes the DSA wing. But he frames this as a centrist Democrat internal critique, not as validation of Trump’s characterization. He has called President Trump an actual threat to democracy numerous times.