In short, a language needs advocates that can brag about something, and the brags need to be objectively accurate. Do not claim the adjective "fast" if I can trivially outrun you in Python, or claim "simple" if I can trivially write shorter source code in Java, etc.
It also need to be an interesting thing to brag about, but, honestly, just getting the first bit is enough challenge....
It also need to be an interesting thing to brag about, but, honestly, just getting the first bit is enough challenge....