-snip-
To be honest, most of the merits distributed look suspicious, but these were the ones I picked out. Almost certain it's being used to upgrade alt accounts. Anyway, if I'm wrong, then apologies, but I don't think I am.
Can you read Russian? As long as the post quality is decent, I don't think it was an abuse.
Looks like most of his merits were received from his local board post. If I remember it correctly, xandry is known for giving merits to members who help in the Russian moderation (
https://bitcointalk.org/index.php?topic=4330297.0), those accounts are probably the list of members who he perceived as helpful members.