What's with the facebook requirement in the pool party event?

unlock a mystery champion When you connect to Facebook friend discovery.

I understand wanting to promote your new feature, but why insist with pushing it on people? I don't use Facebook. I don't want anything to do with their lack-luster security standards. I have no intention of accepting their ToS. I don't agree with their every declining privacy standards.

For the Mystery Champion, you’ll need to connect League and Facebook.

Again, I don't use facebook, but isn't this a different requirement?