The email states they’re winding down more than just him. Not everything is a conspiracy, PC Mag could just be cost cutting or downsizing due to a reduced readership.
Still, firing over email is still sucky.
Try getting a job or a promotion with any VC backed SV company while having a Twitter bio that indicates you voted for or support Trump. Not quite willing to do that? A bridge too far? No prob. Instead, just put that you support the 2nd Amendment. Or the military. Or law enforcement. Or smaller government.
I dare you...