The key difference: smaller communities attract people who are there for the craft, not engagement metrics.
Do you know of a newbie friendly FAQ on how to access usenet in the modern era?
>Reddit's niche programming subreddits (r/rust, r/golang)
Even less niche places like /r/python seem pretty open to writing code by hand. (Though I like how python has libraries for many things)
This might be your solution: