I didn't mean to imply that it's impossible, but that it is a LOT of work. Becoming good at SEO and marketing, then executing a good plan, is a lot of work. My site was intended to be an example of not doing that. Doing that means trading a lot of time that could be spent learning ... I don't know, machine learning or something. Is that worth maybe 2k a month? Depends on the person.
As I stated here [1], It's definitely not easy, though I've found the only difficult part to be getting initial traffic and consistently building high quality backlinks. It's not something that can be automated, but it can be outsourced.
But the OP made it sound easy. It's not easy.