Um. So, we have a M3 and a MY in this household. The M3 has been around since 9/2018; the MY since 9/2022.
The M3 has been running EAP since the beginning; it's been on FSD since 2020 or so; and it's been running the FSD Beta for the last several months. The MY came plain vanilla, which means it does TACC (Traffic Aware Cruise Control) and LK (Lanekeeping).
Both cars have "phantom braking", but you've got to be clear what this is: The car starts slowing down. It's not screech-the-wheels at all. Back in 2018/2019, the M3 did this a lot. Near as anybody can tell, this was brought on by the car mistaking shadows for fixed objects in the roadway. Typically, the current effect is that the car slows down moderately; not a jerk, with plenty of time to hit the gas pedal and get back up to speed. Irritating, yes. Life-threatening, no.
Back then, I'd guess that, on a 150 mile trip in daylight, we might see this anywhere from twice to five times. Or maybe not at all. Over time and software updates (which, if you haven't picked up on that yet, happen somewhere between once and thrice a month) the severity and frequency of these slow-downs has been reduced quite a bit. I see it, on the M3, maybe.. once a month or so? And that includes chugging around with the FSD-beta, which is well-known to be an Interesting Ride. (But we who drive FSD-b are testers, not normal folk, so we accept that.)
Since we got the MY last year, it's done it, perhaps, three or four times. About in line with what the M3 is doing, which makes sense: For the purposes of figuring out if there's an object out there or not, both cars are running the same software.
Now, there have been occasional reports of Teslas going into screech-the-wheels mode. I've, personally, never seen that. At this point in time, my natural inclination is to think that those are hardware failures. There's millions of Teslas chugging around the landscape these days; my experience as a reliability engineer (part time, admittedly, but, yes, for real) is that there's No Such Thing As A Part That Doesn't Fail Somewhere. It's why there's warranties. And, in a previous life as a Prius driver, there were occasional reports that the higher-grade Priuses that also had lanekeep/TACC also had some phantom braking issues as well.
Finally: I know that what follows is going to sound like conspiracy-theory central, but, unfortunately, it's true: There's a decent-sized crowd of folks that would like Tesla to up and fade away. Some of these are the obvious, like competing car companies. Others are not quite as obvious: Oil companies. For real. Then there's just trolls out for the Lutz. And newspapers, who get a lot of advertising dollars from dealers, but nothing from Tesla, often take shots at the company; it's not the small newspapers, either, it's entities like the LA and NY Times. Really. The general rule is that if an errant driver runs their Tesla into a tree and the car manages to catch on fire as a result, there's a three-ring circus and parade that runs down the road doing a look-at-that; any other car that flies off a bridge and kills a half-dozen people in the flaming wreck doesn't get mentioned at all, because it's common.
So, if the occasional slow-down gets you fashed when thinking about it, then, yeah, don't get the car. But I think, frankly, you're either over reacting or simply reading one of the conspiracy theory nuts. Or you've managed to find somebody whose sonar detector up front needs replacing.