Someone should give you some merit... Good analysis, but you could simply report it using the Report button!
There's no point in using the report button for the post because once merits are sent they can't be reversed/removed. Reporting the post would just delete the evidence of how the user is abusing the merit system with his alt accounts.
First, Merit is self policing. When a shit poster gives away their merit they help clean up the merit that is available to shit posters. Even if that shit poster is giving the merit to their alt. The utility of each merit spent is diminishing, it decays by half each time it is spent. Thus allowing a trail of squandered merit to die off quickly.
Right there's no need for a merit police because they can't abuse the system forever.