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That is a sure sign of scam projects and those who participate don this project should post this project to the scam section, so they can warn other people about this especially investors, a legit project should always honor its commitment to its bounty hunters promoters and the community, if they are honoring it, they don't deserve trust from investors.
Who in the right mind would even stay in a bounty if the spreadsheet weren't being updated already?
OP seems to point out the obvious signs already that the project is just going nowhere at all. Just something to expect nothing.
Worse is that people still yearning and rooting for those. Creating unnecessary free advertisements causing investor to think that it is still a legitimate project.