A scenario in which I can imagine this backfiring is if the new hire and the vetoer end up working together. With an open mind that could be overcome, as in get

A scenario in which I can imagine this backfiring is if the new hire and the vetoer end up working together. With an open mind that could be overcome, as in getting positively surprised, but let's be honest, how many people do you know who really have such an open mind?