~snip~
If it was a normal member of the forum that gave 10 merits to that post, they would be labeled with negative feedback for merit abuse.
Honestly, the post you are referring to is not worth it to send 10 merits but I think if you receive merit with this post you will not receive merit abuse feedback but if someone found that you receive 10 merits from your alt account I'm sure you will receive negative feedback including your alts.
We can't just report this kind of post without any evidence that he abused the merit system you must investigate it first before you can take an action and report it to the DTs to left a negative trust.