I'm not so sure. His language, vocabulary, and ability to adhere to a specific topic without going hyperbolic seem to indict a different pompous, wall-posting windbag. The attempts to point the bloodhounds into CH's direction (and away form the one whom I suspect) seem quite calculated, in fact.
I'm sure. The sheer involvement of time they have already put into the account means its them. I feel the chance is greater its CH trying hard not to be CH but still failing, as opposed to someone is carefully emulating their comeback attempt. Don't understand why someone would try to be them: dramatically spraying diarrhea everywhere. I put them on ignore already.