Not sure, but is this lesson handling the New AWS WAF or AWS WAF Classic?
As fas ar I can see it from the console it is WAF Classic because I cannot find the Cloudformation-created resources in the new WAF but I can find them in WAF-Classic. There is an option to switch in the upper left corner in the console. (dont forget to switch to Cloudfront)
You are correct, must be WAF Classic. Thank you.