Nikita,
It is a well known reputation management technique to have dozens (if not hundreds) of accounts(with varying profiles) on all forums to defend paid clients. Individuals with opposite views will be labeled as trolls and a cook session will be performed.
It either wares-out the individual(gives up) or moderators(close the thread and/or ban the individual).
Either way pros (and their paid customers) win. Individual never wins.
Just my 2 cents.