the entire things reads like someone trying to push an alternative. there is no evidence in one direction or the other, and nothing is really being said with any conviction.
native advertising is real, and subtlety is key sometimes. if this was not sponsored by the app mentioned in the last paragraph, i'd be very surprised.
For those who don't find it compelling enough to get to the end: this extremely vague message brought to you by <some other app that is better than all the rest>.
anything to back this up? my searches mostly come up with either greeks physically using black ballots to vote to excommunicate people, or putting names in a black book in 1600s, which was usually reserved for enemies and most likely was not racially motivated.
native advertising is real, and subtlety is key sometimes. if this was not sponsored by the app mentioned in the last paragraph, i'd be very surprised.