Made for Adsense, micro-niche sites for passive income. Who knows?

Question

Google Adsense

I came across replicated articles about the so-called micro-niche sites for passive income on Google Adsense. Who has experience and who works on this topic, what do you say? Are there any pros and cons from personal experience? Do they work on the market now and is it worth doing them? What is the profitability?
The essence of which I undertook: you buy a domain according to the keyword, you form a useful article. you put Adsense ad blocks around it. It's easier to do one-page. However, Google often bans sites, bans Adsense accounts, does not pay out earnings, and does not respond to requests.

Answer 1

The niche is so developed that in order to generate any acceptable income, you will need to rivet thousands of such sites every month.

Answer 2

in my experience, such sites can bring more than SDL
to compare statistics for the same period
https://www.dropbox.com/s/445hsupmmx04zdp/%D0%A1%D...
https://www.dropbox .com/s/jeirjxon0ljrl3n/%D0%A1%D...
a couple of sites from a pack of these, sharpened for adsense
and a site for people, with an order of magnitude more traffic, support costs, editor, etc.