I wondered if Steven Johnson was a secret member of the SPGB - but as he exists purely to discredit anything the SPGB stands for - through his own inability to defend or argue for anything he says - I wondered if he might be state agent sent in to undermine them from within?

But then he keeps saying he is not a member, despite parroting (but not understanding their basic lines, let alone able to defend them)...

Perhaps he is a double-triple agent, so clever and crafty even he can't keep up with what he is meant to be about....