Such links have no special value in the long term. To have a positive impact on SEO, the page (profile page) where the link is posted would have to have some kind of views, and these are looks like archived.
But they can certainly help with new domains when search engines do the first indexing.
I don't think that's entirely true. The mass count of links on the site contributes
some SEO strength, although not as much as links in posts that have active impressions.