I was unhappy with the loss of Alexa as well and told customer service rep Aaron that it was not acceptable to take away features that were part of the package when you bought the car. He agreed but said that Amazon is "depreciating" the Alexa program and particularly the car support...and they wanted to get ahead of it rather than have it lose support and then have to do an update to remove it. I use Alexa all over my home, to control the lights, Sonos music and Next thermostat, so I'm not giving up on it, but it is gone from the car for good, unless you install an Alexa Auto, which others have described in the forum.
As an iPhone user, after the OTA update, with the loss of Alexa, I started using Hey Siri along with Hey Lucid, and to my pleasant surprise, with these two virtual assistant systems in the car, I can now do everything that I was previously doing with Alexa. Let's list then:
1) I have Spotify set up in Lucid Setup and Carplay. When I say, "Hey Siri, play [song]" or best of [artist], it now plays music just like Alexa used to do. I can also ask for NPR or CNN news, and it plays it.
2) I can now do something that wasn't working before the upgrade. I ask, "Hey Lucid, change the temperature to 71" and it does it. You can also say, "Hey Lucid, set the temperature in the rear to 71", and it does it. But it is still OFF, until you say, "Hey Lucid, turn on climate control in the rear".
A Note: I think any settings that you make in a car should be SAVED and be enabled the way you set them, when you use the car next. This business of having to turn on the Rear climate control each time is ridiculous. It should remember how it was previously set, off or on.
3) I can ask, "Hey Siri, [anything I can ask Siri on my phone]". For example, "Hey Siri, send text message to Joe Blow" and it will talk me through dictating the text message. I can say, "Call Joe Blow, and it will place the call." I think you can make calls with Hey Lucid also, but I haven't tested it.
BTW, the App is connecting to the car WAY faster now. Thanks for that...as the Summer ends here in South Florida, I will enjoy for awhile cooling the car down before reaching it in the parking lot or in my garage. You northerners will enjoy pre-warming the car in winter.
I'm going to make statement here - with a few more tweaks, I might now be satisfied with the information/entertainment system in this car for the first time. Adding that improvement to the driving experience of the car, which I think we all agree is AWESOME and this is now quite a sophisticated car to drive.