The motives are now clear. The purpose of pumping all these alts was preparation for the large-scale shilling of the RainbowcityDAO project.
RainbowCun would be promoting the project, and these alt accounts were bumping this theme with reviews about how wonderful this project is.
I suspect that a lot of us felt that way.
I also tend to view everything on this forum as mildly suspicious, so that colors my views...
Or is it someone who will one day pop out to turn around and sell something, because the topics are very regular with a lot of time put into them,
so it seems out of place to have a pure hobbyist write so frequently? Because I don't have a grasp of the person's motivation, I don't know how to respond and don't engage.
It's a money-based forum, so selling or promotion aren't in themselves bad, but that tie with money makes any manipulation all the worse.