[CodeIsMyFetish]

Stack Exchange sites depending on the topic (I'm just going to assume they generally don't have the toxicity of StackOverflow).

Also look around for smaller, more specific subreddits. As a general rule, the bigger the subreddit, the more moderated it will be.

Discord has been recommended. I'm backing it up. Same principle about moderation and size apply.

It wouldn't hurt to look at the comment section of a related blog post or even a YouTube video. The latter is scraping at the bottom of the barrel though.

[Euphorbium]

I love stackexchange, but it is rather hostile to discussions. It is the best at asking questions, and getting them answered, but a discussion is cut short by the rules.