Why don't ALL temporary stacks lost their amount 1 by 1?

With rather older updates riot made stuff like Ashe Q and Jax Passive stacks decay one at a time, and changed dead mans plate to only lose like 3 or 4 of it's 100 charge Units at a time when damaged by champions.

So why not give the same Treatment to other items like Guinsoos and Wit's end? Sure, i understand it could bring some balancing issues, but for wit's end it would be a good buff since barely anyone buys the item at all to begin with. And Guinsoo's mutated into a very situational item, i don't even see it on Yi's and Jax's anymore, at all.

Honestly my post could be complete bs to some people but im just saying my thought on this. either make all temporary stacks decay one at a time, or none at all.

What does everybody else think?