Not a surprise here, that letter was a trap for OpenAI employees who filled it out with their names on it. [0]
The ones that did might as well leave. But there was no open letter when the first military contract was signed. [1] Now there is one?
[0] https://news.ycombinator.com/item?id=47176170
[1] https://www.theguardian.com/technology/2025/jun/17/openai-mi...