I agree. I'd prefer he didn't speak on injuries. I just think the public doesn't have the balls to accept not having injury updates. And if they don't get them, they'll seek out people less qualified to give them, and still be pissed when they're not met.
See the "1-3 week timeline" as an example. Didn't come from the Ravens, yet people ran with it. They'll have to explain why they did.
I don't care if its prospective or retrospective. If you've got a critical player that has an injury in the timeline of his injury, it really benefits the team in no way to put them on IR. If they can come back sooner, you fucked up massively by putting him on IR. If he's on normal timeline, you're not risking a quality player being cut by not doing it. And most importantly, he can practice whenever he's able to, and not bound to a rule that doesn't allow him to.