Can someone explain why harassing and kicking out poll workers would be necessary if the voting software had the heist covered? Is the software only able to steal a capped number of votes from Trump? And the actual ballots fed to the tabulator required Biden closer than he would be without ballot stuffing?

Can someone explain why harassing and kicking out poll workers would be necessary if the voting software had the heist covered? Could the software only steal a capped number of votes from Trump so that the ballots fed to the tabulatord required Biden closer than he would be without ballot stuffing?