Shall grants authority it isn't a requirement.
i'm not sure you understand what the word shall means. It means they will do something. IE they must do something. If I said "trump shall pay E Jean Carrol 85 million" I'm not saying trump has the power to pay 85 million. I am saying he will pay her. So no, you are wrong. That sentence is saying the VP will and must open and count the votes. If you want to say that it is optional you would say they "may" or "can" do something. Not they "shall" do something.
Certainly the lack of a set date should be a flag for you as well.
why? This isn't where the timing of elections is determined. This is the document that lays out what the powers and responsibilities are.
There is nothing wrong with delaying a process just to ensure accurate results.
there absolutely is something wrong with it. and the reason is that the VP has no power or authority to do that. The courts have that power. If there had been proof that there was some kind of inaccuracy, the place to prove that is in court. And trump tried that over and over and over. And every single judge told him the same thing, that he had no evidence. That is why he went to the illegal methods of trying to overthrow the election results.
Rushing before a full investigation is in fact a confession that you know what happened
that is really dumb. There was absolutely no evidence that anything happened. There were investigation. There were court cases. Everyone came to the same conclusion. that there was no evidence of fraud. And it's now been like 4 years and there is still no evidence of fraud. All of trump's whining about fraud was just his fragile ego and narcissism.