I don't do "megascale" backends, though. My code is generally smaller-scale stuff that's designed to be deployed on a wide variety of cheap hosting, and is pretty conservative. It doesn't "push the limits."

I'm unlikely to run into many of the problems that (for example) the PornHub developers hit, several times an hour.

In that case, I benefit from folks like you, that allow me to have solutions that scale down to my level.