The posts look really good, maybe too good. But I don't want to make any hasty conclusions just by looking at two posts and without knowing anything about the person. The way to find out is by comparing the content he wrote about Polygon with whatever else he writes in other posts in the future. For now, he only has two posts. If he sounds illiterate elsewhere and can't answer simple questions that people ask him, it's quite clear he is getting help. Most probably from a bot.