FWIW, the "AI" tab indeed no longer appears on my EU-based "plus" account and the previous direct link to that settings tab (https://www.dropbox.com/account/ai

FWIW, the "AI" tab indeed no longer appears on my EU-based "plus" account and the previous direct link to that settings tab (https://www.dropbox.com/account/ai https://www.dropbox.com/account/ai) now redirects to /account/general.