I've gone through Autopilot/FSD going back to the "what is that strange unannounced hardware" days through AP1, AP2, FSD (until I got the Lucid) and have driven all versions until then. While Lucid is behind where Tesla is overall, they started out doing things right with the parts that are in place. Tesla's original ACC was very unreliable. Lucid's is reliable but I have gotten collision warnings, on occasion, which made no sense. I assume that the car would have stopped anyway, but wasn't about to chance it. Lucid's autosteer is also far better than Tesla's was at that stage in development, and is about as good at lane centering as Tesla.
A big difference is the nag. While Lucid might not be nag free, it requires less pressure. More importantly, too much pressure doesn't disengage it. It merely lets you move closer to one side of the lane or the other, after which lane keeping kicks back in. The same holds after lane changes. The turn signal prevents lane keeping from fighting you, and as soon as you are in a new lane, it figures out lane keeping. I do miss Tesla's automatic driver initiated lane changes. I don't miss Tesla's nag, continued nag without enough pressure and disengagement with too much pressure. With Lucid, there's no balancing act. Also, Tesla sometimes has false alarms when it thinks there's a weight on the steering wheel even though there isn't.
The only thing I miss about FSD on freeways is that in unfamiliar areas with complex freeway changes and merges, I could pay attention to the road and lane changes rather than spending time trying to figure out what lane to be in, what the overhead sign around a slight curve is really telling me about which lane to be in, when to get out of the carpool lane, etc. It's an issue in Los Angeles but wouldn't be in most of the US. FSD never worked well for me on local streets, and given what did work, I felt that even if it had handled the parts where I had to take over, it wasn't a big advantage over actually driving. When Lucid adds some form of driver initiated lane change, that will put it almost on par with Tesla for what I think counts, and slightly ahead because of the way it handles deviating from where the car wants you to be in the lane.
It blows away what's now the free Autopilot in Teslas in most respects, but doesn't adjust speed on curves. It lacks the lane change feature of AP1, but avoided the many years of getting it to work reliably overall. I found that in general, I'm a better judge of when to change lanes than a Tesla is, so I'm fine with driver initiated lane changes instead of fully automated ones.
Personally, I think that Lucid is losing business because of where Dream Drive stands, and do know people who had early reservations but haven't bought the car because of it. However, given so many other things about the Lucid that I like better than the Tesla, it's worth the compromise on that feature for now. Since this isn't a Tesla vs Lucid thread, I won't go into which features Lucid has that are better, and there are some that were on my Tesla wish list that got implemented by Tesla but Lucid still has to get to it.
When I do drive a Model S on occasion, the ride quality, noise, lack of decent blind spot warnings, and other things bother me a lot more now.