Could well be what Satinel says, I've had that a couple of times. That said, there do seem to be a lot of fake comments. The number 3 most rated game, for example, has mass spammed 244 comments sections complimenting and saying they've rated games but haven't as they're also making the same comments on games that don't work and have 0 ratings. Makes my blood boil when so many are genuinely trying to help each other with honest feedback. So probably a combination of itch.io UI being a bit wonky and comment spam.