EXACTLY my point! As a new Tesla owner and reading the manual, one would EXPECT Tesla would be able to navigate on a highway like this (besides the traffic light which I was prepared to take over if it changed to red)...
Please show me where the manual creates this expectation. I've quoted the relevant section, as has Tomas. Tesla state no less than three times in the manual that autosteer/AP is designed for use on freeways/highways with on/off ramps ONLY. That is clearly not the case in your first example (as evidenced by your own photo).
Im sorry you had this expectation, and that, as a result, your car has disappointed you. But I don't think you can blame Tesla for that. Yes, there are 3rd parties who over-hype autosteer/AP, but why would you assume, in this age of misinformation and untrustworthy sources, that what they say is factual and accurate?
Even so, let's look at this another way. You were using autosteer beyond its specified use, and how did it react? It got into a situation it was uncertain about, and BRAKED. That sounds like a safer reaction than just plainly driving on and hoping for the best. And it doesnt sound like AP was trying to kill you .. quite the opposite in fact.
And as for the on-ramp centering. Yes, when it happens (less so then before, but still sometimes) it can be annoying. But is that life-threatening? One thing the car will not do is behave like that when another car is merging using that ramp; it's always handled this just fine the many many times I've observed it handling this.
Sadly there have been a number of tragic deaths when a Tesla was on AP. Some of those were caused by AP abuse (in one famous case the driver was watching a DVD movie), in a few cases AP was implicated as a factor. But what about all the times AP has prevented accidents? You simply dont hear about all these because "AUTOPILOT KILLS DRIVER" headlines sell, "AUTOPILOT SAVES DRIVER" headlines do not. Am I therefore being an apologist for autosteer/AP? No, it's pointing out that you need to be balanced when looking at any new technology or safety system. And certainly more balanced than "Why is autopilot always trying to kill me?" hyperbole which just fans the flames of ill-informed shouting matches.