Comment by Lammy

I found https://www.netlify.com/blog/2017/03/28/why-you-dont-need-cl... and it sounds like you're right.

“The cool thing is that we also provide a load balancer, and if our system has detected that our main load balancer is currently being hit by a large DDoS attack and is slow or unresponsive, we’ll simply route around that on the DNS level. Since we cache content at our edge nodes around the world, end users also experience extremely fast page load times because of this.”