These are huge losses. Pachocki led pre-training for GPT-4, and probably GPT-5. Brockman is the major engineer responsible for the efficiency improvements that enabled ChatGPT and GPT-4 to be even remotely cost-effective. That is a piece that is often overlooked, but OpenAI's advantage over the competition in compute efficiency is probably even larger than the model itself.
https://time.com/collection/time100-ai/6309033/greg-brockman...
Most programming work in any project and company is mundane, so I do agree someone taking care of all that without whining is actually extremely valuable. I couldn’t do it.
Still doesn’t really make sense to put him on such a pedestal like many in this thread. It seems like a cultural thing in the US to overvalue individuals, and downplay the importance of good teams.
But it is your right to assume what he works on from reading his tweets and leap from that to how this is an American cultural thing tho.