At the same time that Intel was allowing product quality to degrade, Nvidia, a 30 year old company, was continuing to innovate.
The not-so-big management secret is that even if Musk took your advice and sandbagged his timelines, then the timelines still wouldn't be met. However it would move the actual time of completion further to the right! By using best-case predictions, things are actually getting done sooner. Call it the Applied Parkinson's Law.
A lot of these are promises, and most of the timelines are not "best case", they were clearly not going to happen.
Even if it somehow gets things done faster, lying to your customers is not acceptable.
It's a company worth unthinkable amounts of money. Most people would have less patience with a guy running a Patreon in his spare time who had claimed for years his supporters would have a product soon, let alone an organisation swimming in funding (Twitter debacle aside).