A problem which is briefly explained here.

Is there any Dell developer who works with the Linux community to sort this kind of kernel issue that the Dell laptop has? (Like Lenovo has).

Since this is not actually a libinput problem, it's actually pointing at where is the problem. Will, there ever will be a good solution from Dell devs teams toward this? This is a really old famous legacy driver issue that can be fixed if someone brother to do something about it from the Kernel side.

An EL5 explanation on this issue would nice.