I appreciate the honesty, and the reality is that most add-on developers have a price; a lot of people would probably sell their add-on for $10M.
But these things auto update. If a government (or even just a moderately big org) really wants to spy on someone, and they determine that said someone uses IPvFoo, $10M isn't a very large price to pay to just get complete access to the target's web browser.
This isn't specific to your add-on in any way, but, well... that seems ripe for takeover by someone nefarious.
As a member of your country's public society at large, sure (media campaigns, propaganda, government contracts for IT equipment and infrastructure). For individual targeting.. not many people.
But these things auto update. If a government (or even just a moderately big org) really wants to spy on someone, and they determine that said someone uses IPvFoo, $10M isn't a very large price to pay to just get complete access to the target's web browser.
This isn't specific to your add-on in any way, but, well... that seems ripe for takeover by someone nefarious.