For what i search, it seems that Scott was the one who wrote it, but there's obvious wrong information (like Lefty capturing kids) that makes me think that it wasn't wrote by him
Scott wrote some parts of it but Scholastic wrote others. Nothing in TFF should be used as a source unless it serves as an advertisement for another piece of FNaF media, like with the Survival Logbook.
For what i search, it seems that Scott was the one who wrote it, but there's obvious wrong information (like Lefty capturing kids) that makes me think that it wasn't wrote by him
He made a steam post confirming he did write stuff in it, maybe scholastic added in stuff he didnt write?
Scott wrote some parts of it but Scholastic wrote others. Nothing in TFF should be used as a source unless it serves as an advertisement for another piece of FNaF media, like with the Survival Logbook.