You are not correct. There are several forum posts complaining about this issue. One of which is linked below.

You can disable it on your profile, but to switch back and forth you have to stop the car, place it in park, switch to FSD, accept the agreements, re-apply all your personal settings for traffic lights and such. At this point, the double or single pull activation greys out and you are stuck with single pull, all or nothing FSD. When the car screws up and you don’t want FSD anymore, you must again navigate to the autopilot menu and disable it.

Or, like me, you can do this once in a safe location, save a second profile for FSD and switch immediately with two clicks from memory.

https://teslamotorsclub.com/tmc/threads/fsd-12-5-4-no-longer-allows-double-click-to-start.334535/

Fully agree. The sort of good news for driving around them is that most of my frustrations come from it being overly cautious and almost getting rear-ended because it decided to stop for a green light or some other odd decision. It’s rare to have it interact poorly with someone that is driving predictably. Like, cut it off without a signal and you have introduced something has not already accounted for. Driving alongside it on the highway, it sees you and knows where you are. But people are unpredictable and it only takes one mistake.

That’s totally fair. I think it depends on the person and what they have going on that day. I remember, or rather do not remember, getting to work in my last car because my brain did the driving task while I was lost in thought. When I’m using lane keep, I feel like I’m hyper aware of what the cars around me are doing and what road changes are coming that I need to manually adjust for. I could see that getting very boring late at night or on empty highways though. Everyone is different and that’s just another element of the equation that the car doesn’t account for.

Yes, I said that…

So you now have to have a second profile* for cruise control and lane keep without FSD.

I agree with that. Adaptive cruise and lane keep do reduce road trip fatigue in my experience. Tesla-bros bought the idea that this would be a fully autonomous car and it’s not. Rather than learning their lesson and using it as a tool, they put their faith in it anyway, weighting the wheel or whatever to get what they paid for regardless of what the car can reliably do.

First, let me clarify I bought my Tesla used, before Musk went full fascist, and autopilot came free. The car was updated to the newest hardware for free, since the original FSD equipment couldn’t do it either.

That out of the way, FSD sucks, and it’s getting worse, not better. When if first come out of beta it was okay. I remember describing it as driving with a teenager, they got the general idea, but would make bad decisions so you had to watch them. Years of updates later and it’s practically unusable to me. It tries to go way under or over the speed limit, it hesitates or slams on the brakes for green lights. It slams on the brakes for cars that pull out with plenty of gap but doesn’t even notice the risky merges. It can not seem to navigate intersections anymore, damn near stopping in the middle of a turn. It actually just updated yesterday and I tried it again, it took me less than 5 miles to disable it again. It is, in my opinion, a hazard to use. I talked to my partner about it and we both agree it didn’t used to be this bad.

Anyway, the stupidest part of all this, is they changed it so it’s either full self driving all the time or not. You want cruise while you’re in traffic because you know it’ll try to cut in front of someone? Silly idiot, no you don’t. So you now have to have a second profile* for cruise control and lane keep without FSD. And the odd thing is that lane keep and cruise are fine. They function like FSD used to. They can drive the highway with no problem and trust me, I do not have much faith in the car so I’m watching it close. It can’t navigate city streets, but neither can FSD…

TLDR, my car was a better deal for me than Tesla. After years of FSD access, it’s bad and getting worse, not better. I can’t believe people pay 5 figures for it and maybe that’s why they feel the need to clip perfect drives or defend it.