I've known gwern for the better part of a decade. Working with him has been great. We've done quite a few projects together, including being the first ones to demonstrate that GPT-2 could play chess (or rather, can be used for actual useful work instead of just being an autocomplete).
He's a great person. I've wanted to do a writeup on it for some time, but what surprised me the most is his humanity. He genuinely cares about the implications of his work. But beyond work, he also cares about the people around him, and it shows.
Just wanted to put in a good word in case someone here was on the fence about applying.
As for GA itself, I think it's an ambitious idea worth pursuing. Imagine an LLM which actually sounded like you, and to an extent, thought like you. How much would you pay to have access to a smarter version of yourself? So the idea is solid, and early results seem promising from the samples I've looked at.
They're also taking personal info very seriously. Obviously, I can't make any promises of what they will or won't do. But they've spent some time studying questions like "What if someone adversarial has access to my GA? Could they get my bank account info?" and came up with a technical solution that I really like.