I see what you mean there. It has the reply button if you want to reply. But if you just want to get to your profile link, you can click on the beginning where it says "Dear xxx". Your username is clickable and that will not require sign in.
However, I believe it would be helpful if the thread title is clickable too. You can send in the feedback by posting in the community center category: https://answers.microsoft.com/en-us/feedback/fo...