Nothing old fashioned about that. A car will have to work really hard to come close to a well done home system, which is what makes the Lucid so exceptional.
Like you, I’m a stereo purist for home. In my case I run the best quality inputs I can get, no separate subs, no multichannel. Two speakers, full range, and my own crossovers (though I’m now moving to fully active speakers instead).
If you take all the fluff away you’re left with the whole sonic experience distilled down to the core components - this is where I believe the real experience resides.