One would probably have to go through git logs [1] so I guess I should do that after getting some food in the belly to answer my own question. It's a big log. Interesting side note, appears all commits from Maxim stopped in January 2024. Must be all F5 now.

[1] - https://github.com/nginx/nginx

Here's some background:

https://arstechnica.com/information-technology/2024/02/nginx...

Ah yes, I vaguely recall the drama. Thankyou.

16 commits from F5 from 2020 to 2025, nothing before that. Looks like they are bugfixes and enhancements. Perhaps someone else created the ngx_stream_set_module module prior to the acquisition.