Not everybody would like to respond to accusations such as this, some tend to keep cool and like it slide.
And it may seem to be that they are clean of these accusations, come to think of it, why not use something different to get to this user instead of using pattern of writing posting or spelling. To me is some how not in line to get this accusation right.
I know you guys at the top see these alt as a crime (lemme use that) or offence, that's having an alt account is an offence but what if this guy just felt like starting afresh? I know some might just grow a new account then sell it (which is not cool to me). The user might get tired of the old account and start up a new one for no negative reason, you know? Something like that might be.