At https://www.ssa.gov/oact/babynames/index.html you can query the "popularity" (meaning frequency) of a name by year. Alexa seems to have jumped in popularity from 2014 to 2015 and fallen since then, to its lowest level in this century, but not all that dramatically: even in 2018 it was the 90th most popular female name ("0.165 percent of total female births in 2018"; "0.311 percent of total female births in 2015").

Amazon Alexa was announced in November 2014, says Wikipedia, so it makes sense: in 2015 people will have heard the name a lot but not yet understood the implications.

I've never wanted a CEO to listen to something more than this.

Maybe someone here can come up with a better, non-human name?

Personally, I think "Slavebot" would be fairly appropriate.