Your position completely ignores court rulings on situations like this.
First all the Supreme Court already refused to take up an appeal on this exact same argument in October. That means that the USSC is the court that had final say in leaving this ruling in place. So any errors were the result of the USSC refusing to take the case. You are arguing that the USSC violated the Constitution which I doubt they will be willing to accept.
Other Supreme court rulings have said that voters should not be punished because of errors by election officials such as if the voters were given wrong information or even illegal information. As long as the voter acted in good faith their votes should be counted. Since the actual error that left this in place was a ruling by the State Supreme Court and a denial of appeal by the USSC court the fault is not the result of the voters so the votes should count based on legal precedent.
Then you have failed to tell us how many ballots actually came in after Nov 3. A quick Google check says that only 10,000 arrived after Nov 3. Trump lost the PA election by 81,000 votes. Those 10,000 ballots would not change the outcome of the election. The legal precedent is that unless the illegal or fraudulent votes would change the outcome the election stands. In this case, it would clearly not change the election so Biden won PA.
There is no Constitutional or rational reason to throw out the votes of 7 million PA voters. The alleged illegal votes being counted would not have changed the election. The voters acted in good faith believing the USSC's refusal to accept the appeal was the final word on voting.