Actually, Borski, the above is the statement that I most disagree with. Historically speaking, it seems to me that Lucid pays attention to this forum more than any other feedback loop short of a phone call to the office of the CEO. They have no better view into pervasive issues by objective owners.
Like you, I have never carried a fob, and have never had to use my key card (which I also carry) to enter the car. That said, the mobile key's propensity to lag when opening the door is the only day-to-day annoyance I have with the car, and it has been a problem since day one. Standing like a fool by the door, twisting my phone back and forth, and waiting for that little flash of light indicating that it's finally going to open. Sure, it's only a few seconds, but contrast that to how cool it is, and how impressive to onlookers, when the car lights up and unlocks as if it's greeting you as you approach.
The behavior of the app smacks of a purely software problem. Whether it's how the app itself runs in the background, the handshake with the car, a routine designed to avoid inadvertently unlocking the car, or whatever. If it works some of the time, it seems that it should be able to work all, or at least the lion's share of the time. From a hardware/software development perspective, an analogy that comes to mind is Lucid running a marathon, and then stopping just a few inches short of the finish line.
If only the app worked as flawlessly when one approaches the car as it does when one is walking away from the car, although I can attest to one issue with the app relative to walking away. It's when ignoring a stupid little thing like this causes people to walk away as owners or buyers.