Should Biden let the Republicans have Manchin?

Steve Bannon is pushing to "bring Joe Manchin into the Republican Party." Joe already votes Republican Party Line and could be the biggest factor in bringing down democracy as we know it so what difference does it make if he has the R in front of his name.
Moscow Mitch is going to let Biden gut his own infrastructure bill and when it finally comes up for a vote he'll use the filibuster to say FuckYou we block all Democrat Bills. Then he can thank Manchin again.