Noticing a problem and having smooth / improved scrolling are two different things. I think you can only notice the difference if you've ever used a macOS device with a trackpad for more than 2 weeks and then switched back to either Windows or Linux. It's just feels HORRIBILE for some people (like me).

The interesting thing: Some Distributions have smooth scrolling (or interial scrolling / kinetic scrolling) by default (Fedora, Ubuntu) and some don't. Those who have enabled it, have no speed setting, so most of the time it's way to fast. I tinkered around a very long time with libinput-config to get it right and now it's acceptable. But it is still waaay better on macOS.

It is NOT a hardware issue though. I tried "hackintosh" on my T460s, and the touchpad experience is nearly as good as on a MacBook, so it is mostly software / OS.