The SpamBlacklist extension's presumed Code Steward is actually not the Code Steward. There's been some outstanding production errors that have been occurring for over a year in addition to some CI instability issues.
Number, severity, and age of known and confirmed security issues
Was it a cause of production outages or incidents? List them.
Does it have sufficient hardware resources for now and the near future (to take into account expected usage growth)?
Is it a frequent cause of monitoring alerts that need action, and are they addressed timely and appropriately?
When it was first deployed to Wikimedia production
Usage statistics based on audience(s) served
Changes committed in last 1, 3, 6, and 12 months
Reliance on outdated platforms (e.g. operating systems)
Number of developers who committed code in the last 1, 3, 6, and 12 months
Number and age of open patches
Number and age of open bugs
Number of known dependencies?
Is there a replacement/alternative for the feature? Is there a plan for a replacement?
Submitter's recommendation (what do you propose be done?)