To me it speaks volumes when trusted members of the community are all claiming you have scammed them or others.
To me, a shred of VALID CLAIM trumps all the hot air of the community(, sorry, etc).
The valid claims derive from the offer of payment upon delivery of units of the in-game item quoted in the OP along with the units of the in-game item (B1) that were so delivered, which is documented in the game database and witnessed by many (and tabulated in the quoted linked spreadsheet). Your suggestion that these claims lack validity is nonsense.
Furthermore none of this would have even happened had you delivered the BTC to the game treasurer (at the time saddam) as was expected of all players making deposits into the game. You instead did so on credit, which leaves you owing the game/treasury/other players BTC unless you buy back the tokens, which is what you did. So either way you owe. There is zero legitimate question of validity here.