It also makes little sense from a practical point of view to allow someone to vote twice. If the PPT were allowed to break ties if the VP was absent, then a situation arises where a senator has 2 votes while the rest have 1. This is unfair. The speaker of the house doesn't have two votes. Likewise for the majority leader of the senate.
It's perfectly fine to ignore me, I still don't know if I passed the bar yet and I could be completely wrong. What I do know is these rules are far too vague and have caused a lot of headaches over the past few weeks.
That's all your personal opinion. Which is fine. But as to the process of the game, a majority of the Senate
has voted to confirm him because the PPT can act as President of the Senate to break ties should the V.P. be gone and so situations like this can reach resolution. Otherwise, you let one bloc of people shut down part of the government. But who knows, maybe they want that.