When Riot looks at Win Rates, why don't they look at Play Rates as well?

Skarner has a 53.33% win rate... and has a 1.45% play rate. Of course this is majority of Skarner mains playing Skarner and winning.

Honestly, looking at Champion.gg, here are champs I'd give buffs because of low WR and PR:

has a win rate of 49.95% and a play rate of 1.16%

shows that she has a low win rate of 48.99% and a play rate of 1.48%

who sits at 48.34% and has a play rate of 1.45%

I'm not sure about, he has a low 48.75% win rate but has a play rate of 2.16%

is even more so... he has a 49.58% and has a play rate of 3.21%

just the same has 49.35% win rate and a play rate of 3.13%3

has a 49.61% win rate and a 1.6% play rate

has a 47.62% win rate and only a 2.68% play rate

is very low in the win rates, 47.02 and has a play rate of 1.38% (that's sad)

is at a 49.19% win rate and has a 2.34% play rate

(its strange, but...) his win rate is at 43.76%, yet he does have a 4.4% play rate...

as a ADC sits at 46.89% with a 1.79% play rate

has a 49.36% win rate and a 2.31% play rate

(just revert him... please)

(this scares me...) he has a 44.99% win rate and a 1.71% play rate

sits at 46.35% even though he has a 2.78% play rate

doesn't need buffs, but by goodness don't nerf him when he has such a low play rate

has a 48.45% win rate and only a 0.18% play rate

has a 45.86% win rate and has a 3.32% play rate

somehow has a 48.83% win rate and only a 2% play rate

(I hope Repetoir gets some inspiration soon)

surprisingly has a 48.34% win rate and only a 1.68% play rate

and who is at a 49.94% win rate with a 1.97% play rate

And here are the ones I see that could use a nerf... using the same website:

may only have 52.36%, but that play rate is 10.45%

(...) he pretty much has 52.76% win rate and has a play rate of 16.61%

(I really didn't want Brand on this list, but) he has a 56.29% win rate and 10.98% play rate

(I also don't want this guy on the list but...) he has a 51.4% win rate and 11.06% play rate

(I wish this was a joke but...) a 51.56% win rate and 11.37% play rate

has a 54.06% win rate and a 13.7% play rate

has a 51.39% win rate and a 15.64% play rate

has a 52.67% win rate and a 11.32% play rate

has a 54.53% win rate and a 10.78% play rate

has a 51.44 win rate and a 10.31% play rate

has a 53.89% win rate and a 14.43% play rate

has a 50.11 win rate and a 13.1% play rate

(just got some nerfs on the PBE so no reason saying her win rate and play rate...)

is breaking a record here... a 52.06 win rate and a 21.14 play rate

and wait a second... 53.28% win rate... 34.1% play rate..... hm

The rest are okay...

well, and have over 30% play rates but are under my limit on win rates.

I set my standards for buffs to "bellow 50% and (depending on win rate) their play rates" and for nerfs they must have "above 50% win rate and have above a 10% win rate".

has a astonishing 31% play rate, but he still has a 49.26 win rate... I don't know. I still find him a better enemy support than a Blitzcrank (just make it so that AD items don't work as great for him).

on the other hand has a crazy 34.47% play rate while having a 48.27% win rate.

What do you guys think? Are the ones shown deserving of buffs/nerfs?