There are accusations about every single site out there. This (resolved) accusation of not awarding the jackpot if I understand correctly is actually against Betsoft. As they stated, he wouldn't have received the jackpot makes no matter which site he was playing at.
BetCoin is still
actively promoting BetSoft games on their site, therefore, in my eyes they are just as responsible for the non-payment of the jackpot, especially now that they cannot deny that they were not aware of the issues.
Regardless of the fact that Betsoft software will cause jackpots to not be awarded when they should be, and regardless of the fact that this will happen at any site that hosts Betsoft games, it is still a possibility that this will happen at Betcoin, and as long as this is a true statement, Betcoin is a scam site. If Betcoin wants to get this label removed then they should pull/remove any BetSoft games from their website.
Until the above happens, anyone promoting Betcoin is promoting a scam site