I do think it's amusing what the other guy says. Forums like this will be full of "Why software estimates are so hard and we shouldn't be forced to stick to deadlines" and the explanation will be "because each React form is like brand new R&D - more akin to Marie Curie's discoveries than a surgeon's work" and then suddenly a brand new kind of vehicle that has never been mass produced before has to hit deadlines or it's sign of obvious incompetence.
I think this is a pretty clear misrepresentation. The entire point of those forum posts is that software engineers are angry at managers promising timelines that aren't connected to reality: they want the unpredictability of the task to be transparent. That is actually entirely consistent, and arguably the exact same frustration, that they have with Musk -- a manager-type promising outrageous deadlines, repeatedly, with apparently zero ability to learn from past misses. The anger is with continuing to promise these outrageous deadlines, and furthermore the frustration of being called out if you are skeptical of them, not with the fact that he misses them. It's a one-to-one, 100%, absolutely identical complaint.
Software estimates also need to be hit, but Sales, Product, and Engineering leadership will fight to prevent the brunt of that from hitting ICs, but at some point if a large contract does churn, plenty of IC engineers will have their head on the chopping board.
I've been on both sides so I get it, and the only solution is to have blunt and honest communication from all sides - Field Facing teams need to not overcommit, and Internal teams actually need to execute and COMMUNICATE why they cannot.
As an employee, we are all working to make the company more money. That's the only goal.
That contrast is definitely striking.