"What to do now? Why don't they just start it already?"
Ganesha waited and just waited, He ate all the sweets he found somewhere and now because there were no sweets and fights he was getting super bored.
He thought there would be some epic battle but here this was just getting dragged and dragged, Even when Rudra came out the all-out fight did not break out.
This does not make sense at all, Who is Rudra? He is made from the pure anger of his own father, It is the fury of god of destruction, The destroyer of the whole creation.
How can the anger of that being be so calm? The one whose name literally means the most fierce one, Front of him no evil stand a chance at all, he destroy and eradicate everything.
Even though this was just tiny part of that power but that made him the most dangerous, the tiny part of it did not have enough capability to control over his anger.