Trumps master plan

Ted Cruz and several other republican senators have stated they, too, will challenge the electoral count on January 6th, 2021. Why is this big news?
Ted Cruz of Texas, Ron Johnson of Wisconsin and nine other Republican US senators or senators-elect said on Saturday they will reject presidential electors from states where Donald Trump has contested his defeat by Joe Biden, “unless and until [an] emergency 10-day audit” of such results is completed.