Not the original commenter, but it seems they're asking if lemmy is doing anything about imposters. These are all different characters: "Greek Ο (039F), Latin O (004F), and Cyrillic О (041E)" so someone could look like they have an official username, when really it's a different unicode character. Nothing to do with the actual IDN part, but moreso about the "homograph" part, or even more accurately, homoglyph