Ruby on Rails' slowness isn't that big of a deal. Anyway I coded my very functional imageboards in it and I have yet to reach 1000 lines of code, where any other script would use thousands.
Anyway Ruby will have bytecode then it will pwn. Conversation over.
Also, weeaboos? My guess is most people who start learning Ruby don't even know it originated in Japan. I didn't until I read about it in my Ruby book.