I'm not strongly advocating for an Ohtani trade.
But I don't think it would be a sign of desperation if they did, I think it would be the type of bold move that has a decent shot at paying off. Similar to the Andrew Miller move which I still don't regret in the least. You don't know what next year will bring. If you are in position to win a title in a given year you have to at least take a close look at anything that will increase your chances.