Why can't I hide my stats?

Why am I unable to make my stats hidden from others?

I feel like sites such as lolnexus promote toxicity.

If my win rate is bad I will get flamed from the start, if my win rate is high I will be flamed by enemy team if I do poorly and I will get camped just because my high win rate is visible.

My teammates will tilt since 'omg your wukong win rate is only 30%!', and I will most likely get flamed for everything that happens even if it's not my fault.

I don't understand why can't I make my stats PRIVATE like you can do in Dota?

People outside my friendlist have no business looking at my stats.