The only thing you might want to be mindful of is to place the blame where it lies, not "shifting around responsibilities [..] between libinput, compositor, desktop environment, applications and back". Most of the time the true culprits are the hardware vendors that don't provide technical specifications for their devices, not anyone else.

Open source devs have reverse-engineered the pointer acceleration curves for countless devices and should be thanked that one can use an off the shelf laptop with a working touchpad instead of thinking they're somehow to blame.