I'm sorry to ruin your imaginations but genetics, linguistics and history are real sciences concerned with tangible facts. Unlike some political theories with no right to claim credibility other than calling themselves "modern." Aryan (term I didn't use) simply means Iranian, regardless of whether nazis abused the term or not. You may find it useful to know that.
I do agree with your more general point but I think we shouldn't dismiss changes in usages of words over time. Aryan doesn't simply mean Iranian in a modern western context, just like the swastika isn't just a sign from Buddhism or Hinduism. Both have strong associations with one of the most defining wars of the 20th century and the genocidal regime that started said war. That can't be easily ignored.
The Black Death killed a hundred million.
Blood flows like a river.
I think you could use a bit of reading up on real modern linguistics.