Earlier quoted context omitted.
Short, international, neutral name, somewhat easy to pronounce in many languages.
It's also phonetically recognizable and distinct. It's one of the reasons you have to say "Hey Google" or "Hey Siri", but you're able to just say "Alexa" I find Siri the worst one for that, it often triggers on "serious".
I wonder if it’s a slow wake-from-sleep issue or something.