Expired domain abuse
Occasionally, expired domains are purchased and repurposed with the primary intention of boosting search ranking of low-quality or unoriginal content. This can mislead users into thinking the new content is part of the older site, which may not be the case. Expired domains that are purchased and repurposed with the intention of boosting the search ranking of low-quality content are now considered spam.
https://blog.google/products/search/google-search-update-march-2024/