Exactly! Cruz has no real logical, intelligent, informative, strategy to dispute this election over, as per your explanation. You're right, "that's it."3 U.S.C. 15 tells congress how to count the votes. They open the certificates sent to them from the December 14th EC vote, one by one in alphabetical order starting with "A"The problem Cruz and the rest of them have, is the fact that there is nothing being disputed other than the magical thinking of voter fraud. They are showing up to this gun fight essentially with no bullets. They're going to be the laughing stock when this is over. And they don't seem to care.
After reading and entering them in the ledger, they call for objections, whereupon they debate for 2 hours and vote thumbs up or thumbs down on accepting the electors.
That's it. There is no mechanism for adding EC votes to the pile after the fact. And no mechanism to make changes to the votes already there, other than to reject them.
He and the rest of these thugs are just going to try and make names for themselves over something that doesn't exist, while believing their base will believe every bit of nonsense they can bring to the floor.