I'm not convinced these accounts are linked, but I'm playing devil's advocate here.
Perhaps it's Kevin or Kelvin but then, it makes no serious difference or should be used as a base for suspicion or connection of accounts.
Well, it does make a difference if you don't want to look ignorant and care (and also know something) about what you're writing. Kevin and Kelvin are two different names, though obviously there's only one letter of difference. If you're familiar at all with Kevin Durant as a basketball player and have seen his name before, I'm not sure how you'd make that mistake--much less multiple members making the same mistake.
Perhaps I spelt it wrong but, you did knew whom I was referring and that's the point. Why stressing!
You're missing the point by OP entirely. JollyGood knew exactly who you and the other accounts were talking about. He's suspicious that such a spelling mistake in addition to other similarities in writing style might be evidence that you're all the same person. It may not be true, but given how many alt accounts there are abusing bounties and engaging in other crap, you can't blame him for making the connection.