Support and maintenance in Rome

For as long as somebody is still using it, which is usually far longer than assumed. They cost no noticeable performance, and removing them to leave the configuration tidy is one of the decisions that quietly takes away the most visits. They are reviewed by actual use, never by age.

Then it is marked as withdrawn explicitly instead of left as a generic error: that way the search engine stops asking for it and you stop seeing it in the report. Sending something that no longer exists to the home page is worse, because it misleads whoever arrives and helps nobody.

Yes. It is what companies with their own technician contract: they want the alert and the monthly report, and they fix things themselves. It costs less and is often the only piece missing, especially if the site is stable and the worry is finding out too late.