Do you play a champion that get new skins?
Examples include:

Or do you play champions that will likely never get one?

This kind of favoritism is tolerable if the less popular champions actually got one once in a while. But man, when you see
getting skin after skin after skin and is on every LoL ad...

sooo yea, kinda. I mean they don't get that many of new skins but the rate is quite decent.