From phoronix.com
Hours after the release of Ubuntu 23.10, Canonical has pulled the ISOs and is re-spinning them after user-submitted translations for the Ubuntu installer turned out to contain hate speech.
Crowd-sourced user translations from a third-party tool that made their way into Ubuntu packages turned out to contain some (unspecified) hate speech. As a result, Ubuntu 23.10 images have been removed and Canonical is working to re-spin the ISOs with the translations.