This doesn't surprise me at all... Just like bots in games. Selling a service that benefits another. Its shady, but definitely believable.
Also, what if this is an actual viable way to "market" for an open source project?
https://www.bleepingcomputer.com/news/security/over-31-million-fake-stars-on-github-projects-used-to-boost-rankings
For anyone interested in reading more on this type of thing, the colloquial term seems to be "SMM panel" where SMM is "social media marketing". EN Wikipedia has nothing of course, but DE has this: https://de.wikipedia.org/wiki/SMM-Panel.
Link doesn't work for me on mobile.
Why would the En version "obviously" have nothing?
Is that to say SMM scams are largely paid for by Germans?