Realistically to get traction on discussions, you need traction so people feel like they’re actually conversing with others. Beyond that, feel like a lot of people underestimate how many users only read/vote on content, but never comment; much less comment with in a way that’s meaningful. Using ChatGPT with structured set of questions, user could rapidly generate more surface area to solicit additional discussion.
My rough estimate is anyone taking part in an idea forum would need to spend multiple more time contributing to others in return for get significantly less contributions back.
Another, unrelated option is to directly contact an expert on the topic, but again, unless you’re actually contributing value back to the exchange, this is going to also have limited returns.