Just some clarification on the green part, the reddit discord went over it again and here was the result

A meme referring to "Healer slots being so open and available in PF due to so little healers willing to join recruitment". There's also a DPS equivalent of such meme, called "Red River", where the excessive amount of DPS slots open for Ranged role. The "Red River" meme usually applies to PFs with practice parties as their objective.