All of the post (not only those 5) follow however the same pattern: a small text explanation+social media link. But even if it's a pattern, there must be thousands of posts like that in the forum, so what the hell
Yep, those are basically shitposts that doesn't look any better than thousands of otherss. Just take for example this post by JackieAinsley for which got his merit from Ratimov. In this post he promotes some shitcoin failed project that is allegedly giving Ferrari to on lucky IDO participant.
What's interesting about this DragonBite project that is being promoted in that post is that it has ANN here on bitcointalk, and you can see several other members of that bumping group writing there.
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