How much do the Apex Devs balance around the overall Legend pickrate?

I assume that Apex Devs balance around casual pickrates, Pro pickrates, Winrates, etc. But for some reason I felt like I remembered that the Apex devs said they heavily balance the game around the overall Legend pickrates in the game, and they sometimes buff characters just to make them more popular.

Is this true, or am I just imagining this article/post that the devs said they heavily balance around pickrates?