I agree that it is a bad idea to upload a gedcom, especially if it is large. Each person in the gedcom would have a profile and be added to a watchlist. My gedcom contains over 2000 people. It would be virtually impossible to manage a watchlist with that many people. That is why there are so many "orphaned" profiles currently on wikitree.
I am entering people one at a time. It is harder than downloading a gedcom, but much more managable, and will be more accurate.