Well, he's already a top pick, I think most people in his shoes correctly decide to enter the draft. The money is too good to pass on.
While draft gurus aren't perfect, I don't think internet football experts are, either. Sounds like the Vikings met with McCarthy and other top QBs (including Williams). It's pretty clear they are doing their due diligence. It also seems like Cousins won't be coming back. So unless Daniels, Williams or Maye drop to 11 (they won't) or the Vikings trade with the Pats (pretty unlikely), they'll have to decide if Nix, McCarthy, Penix, or Sanders is the future.
Reports from the combine suggest that McCarthy did ok. Also it seems really unlikely that Dallas Turner will drop to the Vikings either (for those who thought drafting a defensive stud might be worth it at 11).
https://www.mlive.com/wolverines/2024/03/how-jj-mccarthy-compared-to-other-nfl-combine-quarterbacks.html
https://theathletic.com/5313945/2024/03/04/nfl-combine-winners-jj-mccarthy-michael-penix-jr/
In any event, Vikings are in a tough spot. They only have a few picks in a loaded draft so trading down might be a real idea but with the QB problem, that also might not be a good idea. Should be a fun draft period though.