I get what you mean, but OpenAI did release the gpt-oss in August, just three months ago. I've had a very good experience with those models.

https://openai.com/index/introducing-gpt-oss/ (August 5th)

I like Qwen 235 quite a bit too, and I generally agree with your sentiment, but this was a very large American open source model.

Unless we're getting into the complications on what "open source" model actually means, in which case I have no clue if these are just open weight or what.