I was under the impression that using "nimrod" as an insult was an American thing (reference https://en.wikipedia.org/wiki/Nimrod#Idiom ). The creator of Nim is European.
What's wrong with the name nimrod? The name is biblical but not overtly religious in this context, and the bugs bunny association (of a hunter who is a fool) doesn't seem like it should really offend anyone.
Like if he wanted to name the language "fool", how would it be a problem?
it's a lot closer to "retard" than "fool" in connotation.