I saw this video some time ago.
I had the same experience when replacing the motherboard for my desktop PC, the new motherboard would boot much faster, spend less time in the blinking prompt before boot, applications would be quicker to launch, everything was snappier and more responsive.
All the other components (CPU, RAM, SSD) were the same, only the motherboard was different. It was weird at first, the improvements felt like switching from HDD to SSD, all by switching the mainboard.
Watching that video I immediately recognized the same difference between the optimized firmware of the Lenovo vs the unoptimized firmware of the Framework. (The Lenovo is 12 years old at the moment of the release of that video btw).
But that video is more than a year old, and technology moves rapidly, and so does Framework, they are very efficient at fixing things.
So how are things these days? Did they manage to fix their firmware to provide a snappier experience?