There is no evidence the repo creator is trying to earn anyone's trust. This could be a personal project that they have no intention to try and "sell" to anyone. They may not be trying to earn the public trust and have no interest if anyone besides them uses it.
I don't know how it is currently, but you used to have to make GitHub repos public to access the full feature set (i.e. things like CI runners) on free accounts. Some of us just got in the habit of making things public
[–] rsyring 1 day ago
[–] etchalon 1 day ago
[–] swiftcoder 1 day ago
[–] konart 1 day ago