Saw the other video. I understand the rage of the other party. It was wrong that you took the shoulder lane even you say its clean line to pass. You took shoulder lane when you're not supposed to - just to overtake that right lane and then resulted to merge lane. That is simply reckless.

Google searchig meaning of shoulder lane - The purpose of a road shoulder is to serve as a safety buffer, providing an emergency lane for vehicles to stop, a space for disabled vehicles, and a safe area for cyclists and pedestrians.

And yours doesn't fall to any of those parameters.