Best I can tell, he would have gotten in immediate trouble for even hinting he had a problem with / that there was anything happening behind the scenes. The specific reason is pure speculation, but I can't see him remaining unpressured to take them down. That said, yes, it's just my surmise.
You have a fair point - looking back on the tweets, I think I conflated two things: that he mentioned something in (presumably Vox) Slack, and that his concerns stemmed from a Slack conversation. The latter has no evidence, and I incorrectly assumed it.
I'm still expecting that the discussion was happening between multiple media orgs - at minimum, NYT and Vox, given context and timing - but I can't speak to more than that.
You have a fair point - looking back on the tweets, I think I conflated two things: that he mentioned something in (presumably Vox) Slack, and that his concerns stemmed from a Slack conversation. The latter has no evidence, and I incorrectly assumed it.
I'm still expecting that the discussion was happening between multiple media orgs - at minimum, NYT and Vox, given context and timing - but I can't speak to more than that.