I’m just saying, erlang was built for telephony at scale, not for building some REST website. “You probably won’t need more than one big host for any given request” isn’t really a winning argument for scaled systems
Correct me if I'm wrong, but I believe "scale" in the original context meant developing a system with strong fault tolerance properties, so that if a node went down to ie a hardware failure, the system as a whole would keep working normally.
So, did you run into any systems that needed to scale to tens of thousands of cores for a reason inherent to the problem they were solving, and was built on top of BEAM?