My engineering manager at my old job made double my salary and yet bragged about how every month he was on a new Netflix and Amazon Prime 30 day trial.

Bots are an annoying adversary to have, I'll tell you that much. If there is any way to make money out of it - including those you couldn't have imagined - someone on the internet is going to figure it out and it will be worth their while

You don't need to create a bunch of emails, just unique enough addresses. I've got a catch-all on my domain, that's unlimited address. Gmail will let you alias with anything using +, and ignores periods last I checked.