“On Monday, in the magazine’s first statement discussing [now-former editor Ian Buruma’s] departure, it described the “considerable concern” over the essay among readers, adding, ‘We acknowledge the validity of this criticism.’ … While citing Mr. Ghomeshi’s free-speech rights, the magazine described ‘our failures in the presentation and editing’ of the essay” — in particular, departures from usual editing practices and the bypassing of most editorial staff.