They’ve clarified that the original poster of this didn’t have all the facts.

Ubisoft applies the following considerations when accounts are inactive.

The gaming activity of the account since its creation.

The account’s libraries: accounts that include purchased PC games are not eligible for deletion [emphasis Ubisoft’s]

The duration of inactivity of the account, meaning the last login to our ecosystem (including from Ubisoft games on Steam and other platforms) In practice, as of today, we have never deleted accounts that have been inactive for less than 4 years.

The existence of an active subscription tied to the account.

Welp that’s one way to clean up my digital footprint