This may be a controversial take based on the last few years of SO discourse, but the strictness in SO was part of what made it a good resource.
For a question asker, it could be really toxic. I've had toxic responses as well. The problem is, there are _a lot_ of bad questions that would pollute that site otherwise.
For a case study into what it would look like if it invited all questions, look at many subreddits.
I'll occasionally go on /r/ObsidianMD to see if there are interesting product updates, but instead I just see questions that get re-asked _constantly_. There's a very bad culture around searching for previous thread for info on many subreddits. People also ask questions unrelated to the sub at all. I've seen so many times people asking questions about some Android specific problem unrelated to the issue. While ideally I'd like to help these people, it pollutes real questions, discussion, and most valuably to future users, the ability to properly search for previous discourse.
SO best acts as library of information. I will say, people on there could benefit from removing the rude tone (this is a trait I see in software engineers frequently, unfortunately). But closing activity when it's inappropriate or duplicate (which despite many testimonials, I have seen is more common than not) is a good habit IMO.