The arguments are already circulating.
Again the vast majority at least here in Brazil does not buy to use Android, on the cell phone they already supply suans nescessidades with Android, the CBSs are compared to use with media center or as a game emulator to stay connected on the TV of the room, I have friends who compare for this reason, are not children but also do not want to waste hours reading manuals of how to solve problems in the OS or afraid to buy a CBS with incopatibilities.
About the M2 for people is a problem for 3 reasons.
1 there is no case for ROCK PI 4 with M2 SSD support at this time.
2 many of the SSDs do not yet have compatibility with the ROCK PI 4 and the few that works are not ready the OS that can be installed directly on it.
3 Ask a novice user what an SSD-M2 is most if they want to know what it is for.
I yours that in the future this will be solved, but it is in the future, we are talking about the actuality.
As I said the $ 75 cost of a board to a Brazilian or South American, to an African, or to an Asian Pacific Ocean are not keen on paying dearly for a board that has specific functionality and would have to study hard to be able to solve usability issues.
I ask you how many people want a board just because of M2?
Get out on the streets asking this, people want facilities, they do not want to take risks.