A rather unsavory image made it to the front page of the Ordinals website for 30 minutes before it was hidden, however, the image itself is immutable.

https://cointelegraph.com/news/bitcoin-ordinals-creators-look-for-fix-after-first-instance-of-shock-porn

Based upon what others have said about taproot and ordinals/inscription, apparently this is stored in the bitcoin blockchain itself…

The real story here is how will this feature of the bitcoin blockchain negatively impact it?