This isn't unlike the radio silence Brendan Eich kept, when the Mozilla sh* hit the fan. This is in my opinion the outcome of when really technical and scientific people have been given decades of advice of not talking to the public.
I have seen this play out many times in different locations for different people. A lot of technical folks like myself were given the advice that actions speak louder than words.
I was once scouted at a silicon valley selenium browser testing company. I migrated their cloud offering from VMWare to KVM, which depended on code I wrote and then defied my middle manager by improving their entire infrastructure performance by 40%. My instinct was to communicate this to the leadership, but I was advised not to skip my middle manager.
The next time I went the office I got a severance package and later found out that 2 hours later during the all hands they presented my work as their own. The middle manage went on to become the CTO of several companies.
I doubt we will ever find out what really happened or at least not in the next 5-10 years. OpenAI let Sam Altman be the public face of the company and got burned by it.
Personally I had no idea Ilya was the main guy in this company until the drama that happened. I also didn't know that Sam Altman was basically only there to bring in the cash. I assume that most people will actually never know that part of OpenAI.