Can you get the bots to actually cite your forums?
If so, the problem is ahrefs. This remains my guess, the AI Citations feature is fairly new and might not work yet.
If you cannot, something else might be amiss. In that case, try a few other Discourse forums. If they do show up, then the problem isn’t the framework, but something specific to your site.
For what it’s worth, here’s what ChatGPT gives me for an example query about Meta:
