In evaluating these sorts of things, I try to determine whether the ad is intended to attract investment; if it is, then it's not allowed. Just because it's possible to invest in the advertised thing doesn't mean that it must be rejected: I'm looking at the intent of the ad. I was convinced in this case that the ad is aimed at attracting interest in the technology, not attracting investment. Neither the ad nor the linked article encourages people to buy Graphene tokens. You'd actually have to do a bit of work to figure out how to buy the tokens: you'd have to research further to figure out how that Graphene tokens will be airdropped to holders of Phore, and then you'd have to buy Phore. Phore also apparently has a working marketplace app, which makes me think that the whole thing isn't complete vaporware. So my overall sense here is that Phore is actually trying to build a product, and they're trying with this ad to generate interest in the product, not to generate interest in investing in Phore/Graphene. This is allowed. (Advertised things do not have to be good/useful to be accepted, BTW. Ads are not endorsements/recommendations. I'm just trying to prevent forum users from getting scammed due to ads.)

Now, I could be missing some context here. I don't follow this space very much at all, I never heard of Phore or Graphene before this, and there's a limit to how much time I can spend time researching this stuff.