If the Teamsters aren’t out doing legwork (unions do that a lot, especially teachers’ unions) and raising more money, then that is a win by default for Trump.
If males resent the schoolmarm nasal Karen whine of the scolding and egotistical Kamala Harris and secretly vote for Trump, and black men have had enough and either won’t vote at all or go for Trump, plus Teamsters hold back like this, all of this is good.