Does it still use a 'spam score'? It did in the past, but it's unclear how spam is evaluated now. Signature links are marked as rel="nofollow"
It shouldn’t be like that. This site has good domain authority, and the links are marked as “nofollow.” That said, I always recommend testing things out for yourself. As soon as I’m able to verify it myself, I’ll come back and share my thoughts. I still can’t post links. I’m new here and still figuring out how I can contribute with valuable content.
If the signature link is nofollow, like on this forum, then there’s no need to worry about penalties.