After driving on 10.69 for a week and having it do several commutes and side drives, I can honestly say it is one of the biggest regressions I have experienced in a FSDb update. It may be confirmation bias, but I can't really see anything that is noticeably better. On the other hand, there are a number of things that are significantly worse, primarily:
1. The problem I have in bumper-to-bumper traffic on the highway in NoA has made its way to Autosteer on City Streets ("AoCS") - the car wants to be accelerating or braking constantly. If it's not happily going down an empty street at the max speed, it's braking hard or accelerating to adjust speed based on the conditions around it. Reacting to lights turning green, pedestrians entering view, proceeding through intersections, etc. - it has gotten extremely jerky and lost all "subtly" in its driving ability. Some may say this is somehow inherently safer, but it's very uncomfortable for passengers (including the operator) and makes AoCS much less useful as a feature.
2. Lane selection has gotten orders of magnitude worse. You can tell it has migrated away from using map data (as Elon touted) and instead wants to read the lane lines and street markings. However, for many of my drives, that means it is constantly getting into the wrong lane. It will make, e.g., a right turn going into the leftmost lane on the new road, then put on the signal to move to the right lane, then immediately signal to move back to the left lane for an upcoming left turn. And at many places it finds itself in the wrong lane to proceed, the white line goes solid and the car won't cross, and it's screwed and I have to intervene. To be fair, some of these situations require "local knowledge" - having driven there before and knowing the lanes split the way that they do. But, because it can't learn local routes and no longer relies on map data, it will never be better at these intersections or conditions, which is very disheartening.
3. Unprotected left turns and right-turn on red are just really bad now. I don't know if it can no longer see oncoming traffic or if its aggressively "creeping," but I no longer feel safe allowing it to turn right on red or make unprotected left turns if there is any oncoming traffic. It just feels like it wants to lurch out and get hit by the oncoming cars, and I don't have the guts to let it go and see what's going to happen. Again at this stage in the game, it makes AoCS basically unusable as a feature because it can't be trusted at all in these situations.
I don't remember enough about some early versions of FSDb to be able to say if 10.69 is the worst version of FSDb ever, but I am confident in saying this is the worst step back in a single version upgrade I have experienced since v10.5 last November. As far as all those saying it's a significant improvement? I am simply not having the same experience here in Atlanta. I have said several times in the past I would wait for v11 and if it wasn't any good, I would back out of FSD Beta testing. It's getting harder and harder to wait for v11, though (if it is ever coming).