No, it doesn’t mean. Throttling stops, depending on how it has been done, because robots.txt is toothless, bots to act as mini DDOS attacks.
There are three reasons why you don’t get any AI citations:
- The same information is found in more popular places
- No one has even asked something that would lead to a citation to your forum URL
- Ahrefs is wrong
Ahrefs is one of those companies whose bot should be banned in the first place. That is one reason among many why the assumption ”Ahrefs is wrong” is one of those three.