Yes, because it means your profile linked from more pages. Doesn’t really need to be old post. You can also use new post.
It will help your profile page become higher score, and the link from higher score page is also better.
It also help your profile noticed by more people, resulting more chance that your website is visited.
Make sure you don’t do spam on the forum site, so your profile backlink will be better.
This forum backlink strategy also considered as high-quality backlink strategy at 14 Strategies to Get High-Quality Backlinks. It is numbered at 12th.
Hope it helps. If my answer is helpful, upvote will be very helpful for me.
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