That is my number one complaint about the vehicle.
The newer models addressed one of the biggest pet peeves I had, and that was the idiotic way they used to store the rear-most seat. I've got an '05, and they used to just swing those almost-useless rear seats to the side, taking up cargo room. I happened to get one that did NOT have the rear seats at all, and that, alone, got me signing on the dotted line as fast as I could. The newer models fold flat, which is a gigantic improvement.
I dunno if the newer models have rectified the other issue I have, and that's the rear wing windows - you've got to get out, open up the stupid rear barn door, and unlatch them. If it starts to rain, get out, get wet, and reverse the process. Dunno if they newer models have fixed that, but there's a mod to power the open/close, I just think it's ridiculous that Lexus didn't consider how stupid the design was. And yes, ditch that shitty barn door, and give me a sliding rear window.
IF you can find one used, they have silly resale. I was looking to pick one up in late '19, early '20 coming off lease, but I wasn't really paying attention at that point, as I didn't NEED a third vehicle, so I was waiting for just a few bucks less, and I hosed myself. I was one day late when finally deciding to pull the trigger, and there's been nothing close to touching the deal I could have had. Been kicking myself often over the last 2 years.