So when you remove that tickbox "Share my account info" - your data still gets shared: "The Facebook family of companies will still receive and use this inform

So when you remove that tickbox "Share my account info" - your data still gets shared: "The Facebook family of companies will still receive and use this information for other purposes such as improving infrastructure and delivery systems, understanding how our services or theirs are used, securing systems, and fighting spam, abuse, or infringement activities." Never does it say, you won't get ads. But if you share, you will get "improved ads". Am I reading this right?