Set aside all ego's and beliefs for a minute and try to approach this more subjectively.
Does it really matter if the sigs were altered purposely or out of sheer neglect/stupidity? Isn't the whole point of cryptonote & others, all about the cryptographic technology itself?
We don't know who Satoshi Nakamoto is and why he created Bitcoin in the first place. He could be a perverted genius who thought/created the technology itself to be used as a monetary vehicle for perverts alike to purchase kiddie porn. Who knows? *Speculation* Did it stop the evolution of Bitcoin/community and all the benefits it has to offer.....No!.
Why go through all the effort and man hours create a sound cryptographic method? to scam people of their savings? I highly doubt it!!
I currently hold Monero, Bytecoin, ducknote, so before I get any type of bashing as a BCN shill. all I am saying is try to be as subjective as possible and don't get carried away.

Amen. I don't understand all the finger pointing at all the other cryptonote coins. "They are scams and should be avoided like the plague," we are told, but how are they scams? We are left to do guesswork based on circumstantial evidence that really doesn't mean jack shit even if it were all true anyways. How does their existence represent some spiteful vengeance against Monero by the Bytecoin team? How can the various coins and this Cryptonote coingen actually impact the price of Monero to any substantial degree? If anything an attempt to dilute the cryptonote community with vast number of cryptonote forks will only exacerbate the indifference to any coin not named Monero.
CryptoNote coins are still very rough around the edges. The technology still needs to be developed. We have a healthy number of coins that are all developing cryptonote down their own unique paths, just as if 5-10 bitcoin alternatives existed a month after Satoshi released bitcoin. Why not let those groups try different things and see which one applies the best ideas of the bunch? Natural selection by a free market.