Yet you chose to enter the road to be an arrogant jerk.

No, he did exactly what the highway code expects you to do.

Have you ever tried crossing a busy junction?

Given that a lot of drivers don't indicate, all you can do is to look around
and hope that any driver turning knows how to drive.

If one flow of traffic was already halted, seems like a safer (and more
efficient) way of crossing to me.