I second this. We serve 500 million requests a month ourselves for one of our clients. We are a sub-20 people team. Previously we were on Ruby (which is awesome to get something out there really quickly) and we were on NodeJS / SvelteKit prior to that. I view all of these platforms as tools like hammers and chisels. You should use the right one for the right use case. We still use all 3, but 90% is now in Elixir, 8% about in SvelteKit, maybe 1% in RoR.