Let me give you another perspective so you might be able to understand that not everyone thinks as you do. Some people, such as yourself, appreciate periodic updates even if those updates contain zero information. Hi, nothing new to report, blah, blah blah, bye.
But there is another group of people (like engineering types, but not exclusively) who simply wouldn't think there was a need to tell people - even periodically - that there's nothing new to tell them. It just doesn't register on their radar to do something that appears to have no value from where they are sitting.
This is not to suggest that you're pov isn't valid, this is just to make you aware that not everyone thinks the same way on this front. We've known that there's been some revolving door stuff going on in the communications area with Tesla for a couple of years now. We can make some educated guesses as to why this has been an issue from the start and continues to be, and we need look no further than the top of the food chain and consider what kind of person he is, what he believes to have significant value and what does not, his managing style and so on.
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I believe he's publically acknowledged is over zealous timelines. It's a personal fault and he's aware of it. But like all of us, some habits die hard. I can live with it because he has so much else to offer that I view it as an annoyance more than anything. I've learned to recalibrate timelines, as have many others here.
There have been consequences of missed deadlines and will continue to be, but in the scheme of things, looking to where the puck is going to be rather than where it currently is - there are bigger fish to fry than missed deadlines. And you shouldn't apologize for someone else's mistake/s, that's not your responsibility. :wink: