Being constrained to a single keyboard layout all your life sounds awfully limiting. I literally swap between completely different keyboards often (ortholinear/standard staggered/split layouts/etc). It takes some getting used to in the first couple of weeks, but once you're used to swapping layouts often, your brain just adjusts automatically.
There are some gains from being able to adjust, and some other gains for being able to use any computer with the same shortcuts and the key where I expect them to be.
Personally, I prefer the gains from the latter approach: for example, I use ThinkPad bluetooth keyboards with eink tablets and Termux when I want to switch to something easier to my eyes.
Keeping the same environment (ssh + tmux + bash + vim) with similar keyboards layouts means my workflow and habits have become very independent from the hardware: I only have maintain separate shortcut remapping solutions based on the OS (AutoHotKey for windows, sds100 keymapper for Android)
GP is probably referring to the move away from the classic keyboard, which more resembles the IBM desktop layout (separated F keys in clusters of 4, standard home/end/pgup/pgdown arrangement, etc.).
To fans of that layout, the standard (still typical on desktops) was abandoned on ThinkPads ~10 years ago.
But you need to relearn the keyboard as it's not a standard ThinkPad keyboard (no PageUp and PageDown above Left and Right)
That detail alone means I won't buy it.
Emulation or recompilation has fewer drawbacks than changing habits.