Interesting that the author, Callum Locke, seems to be a real person with a real reputation to damage. Previously this would have been a trust signal to me, I figured real developers would be less likely to go rogue given the consequences.
For example, your income for the 10k users will be ~ $ 1000 per month, users 20k ~ $ 2000 per month… 100к users ~10 000 $, and so on.
ARPDAU (Average Revenue Per Daily Active User) basis - In average we have $0.007-0.011/user, US is $0.018.Here's what it can look like to an author of a popular extension: