This article is a great promotion for Cloudflare, but it does not really explain WHY page speed matters. Of course we all want our websites to load fast. I'd be more curious to see how the speed correlates with your conversion rates.
Well, I understand it matters for Amazon and Google, but I'd be curious to see how it works in case of OP's website. Obviously it's going to be different from Amazon. I guess the subject is a little bit misleading.