Initial steps or instructions to begin using Microsoft Q&A
It seems that your profile and content from the Microsoft Answers platform have been migrated to the Microsoft Learn platform. This transition may have caused the links to your previous profile to redirect to Learn instead of the original Discussion page. As part of this migration, only certain posts and threads were carried over, and others may have been archived or made anonymous. This could explain why your bookmark to your account is no longer functioning as expected.
If you are experiencing issues with accessing your profile or content, it may be beneficial to visit the main Discussion page and navigate from there, as you mentioned. Unfortunately, there is no direct way to link your old content to your new profile on Learn, which may contribute to the confusion regarding the redirects.
References: