Coren showed poor judgement, in my view.
He showed poor judgement in
his answers during the arbitration election questions phase.
And he showed poor judgement by putting himself forward as an arbitrator (effectively a public position), knowing full well he had an internet past that could easily be used against him (and Wikipedia) by an inquisitive media already looking to expose senior Wikipedians.
I hope Coren moves on from Wikipedia and enjoys a happy future.