I haven't outgrown my teenage obsession with acceleration stats for cars, but what you say is dead on. There are really very few instances in driving on public roads where power differences are going to make much difference -- at least in the ranges of power in which any of the Lucid dual-motor cars play.
I've owned a lot of high-powered cars, and the meaningful differences in power delivery are felt more in the "liveliness" of the cars' responses in making quick speed adjustments. However, the instant torque delivery of electric motors levels the field a bit so that you get that same sense of liveliness even in less powerful EVs.
In the marketing run-up to the car's release, Lucid talked constantly of its "LEAP" power platform and invariably showed visuals of that platform with the deep rear seat wells -- even using that image when the text talked of the 500-mile range. The most crushing disappointment during our long wait for the car was when I finally got confirmation that the Dream Edition would not have those deep footwells. I've sat in the car with the smaller battery pack, and the difference in rear seating comfort really is pronounced. The fore-aft legroom in the Dream and GT really is amazing, but that relaxing of the knee angle with the deeper footwells puts the rear quarters squarely in MB S Class and BMW 7 Series territory.
A recurring daydream is that Lucid is eventually able to open up that rear floor well for all its models, either through power density improvement in batteries or through placement of those four modules elsewhere. I've even wondered if two could be mounted vertically behind the rear seats with the other two put in a platform on which reconfigured front seats sit (sort of like the platform on which the rear seats sit). The packs are only about 3" deep, so could the bottom of the front seats be redesigned to reduce their depth enough while retaining their comfort and adjustment functions? I know this is far-fetched but, hey . . . it's a daydream.