My thoughts are similar. I think it’s a bit preachy, and as you say authoritative, but I’m not totally opposed to it. I figure he’ll get pushback from the rank and file but as long as that doesn’t become adversarial/argumentative I’m OK with it.
I would also consider approving with a PM just expressing our normal decorum of not judging, not preaching, and not using the canon as a cannon – but such might be expressed in the open forum as well. Cadence hasn’t been around much lately, but I don’t think he’ll let that comment slide.