Sama also went on Lex and got over 5M views. The title was: OpenAi ceo on, ChatGPT, GPT4, and the future of AI.
So yeah, Ilya is a very known entity. No, ordinary folks don't need to know him, but if you are in IT and especially if you have anything to do with AI, then not knowing about Ilya tells more about your informational bubble than about Ilya's alleged lack of recognition.
It is akin to claiming to be into crypto on development side and not knowing the name of Vitalik Buterin.
Even the recent OpenAI profile in one of prominent publications covered Mira, Ilya and gdb in addition to Sam.
But the fundamental question is why would a researcher expect (if they do) that they will be as well known as the CEO who is the face of organisation?