Just pasting this here for anyone else that runs into this issue.
Greetings
Thank you for contacting Blizzard Customer Support. My name is Game Master Enmiduhoon and I am here to assist you with your request.
Thank you for your reply.
With the release of the new expansion all of the campaign skips from the previous expansion got removed, that means that the campaigns have to be completed in order with new characters again that have not done the skip beforehand.
I know this might be a different answer than expected, however we cannot undo those changes retroactively.
here a guide from wowhead that can help you with that:
https://www.wowhead.com/guide/maw-zone-guide-shadowlands-torghast#maw-introductionIf you have any other questions then do not hesitate to visit us again, we are glad to help.
Have an amazing day!
If you continue to experience issues, you can reopen this ticket. If you have a new or separate issue, please submit a new ticket.
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Regards,
Blizzard Support
So yes, it looks like if you have an alt you want to work on Shadowlands content you must complete the entire Shadowlands campaign in its entirety to be able to do end content that was previously available to all max level characters and alts. As if it was still current content. Very lame to remove that content skip for no apparent reason other then to make it purposely inconvenient.
Also [Leilleath] thank you for your help you are the real MVP!