First things first... an obvious fuck-up by the system that needs to be addressed. I'm sure this will be resolved quickly. That's one of the main benefits of the OTA software updates.
A couple of points for consideration, though:
1. The vehicle does not run a red light. It is turning right out of a McDonald's parking lot and then trying for an immediate U-turn onto the navigation track for a new destination - no doubt a questionable navigation decision, but one that we've all seen on the roads before. The screen cap shows the car doing the subsequent U-Turn, and the red traffic signal you see on the left is for crossing traffic. The green arrow to the right is the signal for the Tesla's direction of traffic. But none of this excuses the Tesla for failing to yield to the vehicle already in the left turn lane. This scenario is a bit of a quirky edge case, so using it as dispositive evidence that the system is "not good" is cherry-picking.
2. The creator of the video made this video to show the one issue he experienced during several hours of driving in FSD 12.5.1.1 with zero interventions. His overall assessment is, "The release is amazing and has made driving boring (in a good way)."
The system is improving with every release and the fact that users are having to search out uncommon scenarios to test the limits of the system speaks volumes as to how well the system currently performs. I wish dumbass Elon would stop throwing his "delivery" dates out there, though.