I have followed Tesla closely over the years and this is par for the course of how he operates(similar things have happened at SpaceX but I know more Tesla specifics).
The issue is that in the case of Tesla, automakers have tried a lot of stupid things Musk have done and failed beforehand. Musk ignores those prior learnings and repeats all the mistakes that incumbents made decades ago.
What has saved his butt time and time again is the fact that he has been able to conjure up enough financial runway to re-learn the mistakes and recover and the fact that sometimes mistakes made by others in the past are no longer mistakes given today's environment and end up becoming competitive advantages. So he wins some and he loses some.
One example of him losing is when he attempted to automate all the assembly in the factory in 2017. He messed up and hired the wrong people to design the body of the Model 3 and it ended up too expensive to manufacture. In response he attempted to use robots in assembly to cut costs. The technology for what he wanted to do was still not ready just like it was not ready in the 70s when GM tried to do the same thing. Robots are Blind, one armed, and stupid. They cannot handle finesse when dealing with a noisy real world.
On the other hand, GM and others were adamant to design their cooling systems with multiple loops because that was the way things were done and it was a reliable way to accomplish the task. As a result this thinking was ingrained in all the OEMs. They have cooling departments that defend their approaches and it causes stagnation. Musk's approach of repeating all the things that OEMs already did led to him discarding beliefs that no longer are the best way of doing things and led a much better and cheaper design using one cooling loop and adjusting between heat/cold using software. When every penny counts as it does in automotive this was a competitive advantage that now competitors are copying.
As long as he has enough runway I wouldn't count him out as he seems to running the same playbook as Tesla and SpaceX.