According to several Lucid execs at the San Jose service center grand opening that I was a part of today, a new car update is scheduled for the coming week. It should address the fob issues once again and hopefully resolve them for good.
I think a fob firmware update is going to be needed as well at some point, which needs to be done by service at this point, but at least mobile service can do it (there are plans to add fob updating to the Lucid app, but it's probably in a distant future).
But the car update alone should help tremendously. From what I gathered, there are two sensors that talk to the fob, one for when you're outside and one for when you're inside and they get confused between each other when you're inside, resulting in fob detection issues. The firmware update is supposed to address that.
I did not get any information about what else might be in this update, but I'm hoping for a lot more.