No argue there, that is not what I tried to convey. I simply explain that the hash rate continues to increase over time and therefore, you can assume that mining adoption keeps increasing and therefore it is profitable in many countries. To the best of my knowledge, there is no way to know how many solo miners are out there exactly, even the number of nodes reported does not include the ones running over TOR, which are many, specially since Umbrel OS and Start9 appeared in the picture

Thanks for the tip about Stratumv2!, definitely worth looking into, checking the web site and reading that Matt Corallo is one of the collaborators speaks tons to me.