I'd guess other non-Japanese-speakers? Throwing the comment at Google Translate/Papago is easy enough, and might register as "there's a Japanese troll/spam prob

I'd guess other non-Japanese-speakers? Throwing the comment at Google Translate/Papago is easy enough, and might register as "there's a Japanese troll/spam problem". Maybe generating this impression is the objective? It'd be a form of nerd-sniping - if you feel satisfied with yourself over going the extra step of using a tool, you might stop thinking critically at that point and be susceptible to being duped.