When we talk about scale, are we really talking about bottlenecks? What fascinates me, is that LetsEncrypt has 2 beefy servers and that's it. Surely, a few mi

When we talk about scale, are we really talking about bottlenecks? What fascinates me, is that LetsEncrypt has 2 beefy servers and that's it. Surely, a few million packets of highly compressible text over the pipe isn't that much of an issue? Is it? I've never done it so interested in hearing thoughts.