If you don't feel like you can be a professional security researcher, why not settle for being a hobbyist?
It sounds like you still enjoy the subject matter and it sounds like you know a lot more about this than the average developer. I've considered a senior developer and I've never done what you were describing.
I've suffered from impostor syndrome in the past - and I still do to an extent - but I've never found another hobbyist to be hostile about my knowledge or lack thereof.
We created this website in order to help door to door delivery people in the Dallas area. The website uses a MERN stack and we host about 500 apartment complex site maps.
Our strategy for map collection is to reach out to apartment complexes directly, and to take map submissions from users. We would very much like your feedback.
It sounds like you still enjoy the subject matter and it sounds like you know a lot more about this than the average developer. I've considered a senior developer and I've never done what you were describing.
I've suffered from impostor syndrome in the past - and I still do to an extent - but I've never found another hobbyist to be hostile about my knowledge or lack thereof.