[efnx]

It's not that they're incorrect - they are opinion disguised as fact. The points about lacking an unsorted map are really the only substantial argument, but only if your use case absolutely needs an unsorted map. I've never specifically needed my maps to be unsorted under the hood. The link about someone suggesting you turn off garbage collection doesn't even mention turning off garbage collection. My main point is that it's a very ranty post, as are most of his others. I'd like him to come back with actual benchmarked code.