You are correct
If takes Wolfe’s offer then he risks dampening rat enthusiasm, he needs rats to turn out. The crossover RINOs he needs to win are already supporting him, they don’t care if he supports Harry Reid.
Turnout will be key and the major unknown is what the unusual circumstances of this race will do to that? Under normal circumstances with the Republican way ahead in the polls you would expect the Dems and the Independents and the moderate Republicans to stay home. But now? Who knows?