[da_chicken]

It means it's their fault because they clearly were not paying attention or their memory has failed them.

L0phtCrack has been decreasingly relevant in the past 10 years or so -- it wasn't available for awhile and some free tools are similar so you were basically buying the rainbow tables -- but if you were in security in the Windows 2000 or Windows XP era, you know of this tool. There was a lot of discussion for years around and about password crackers after rainbow tables became a thing.

It's not like not knowing what Wireshark or nmap is, but it is like saying that you've never even heard of Kismet or John the Ripper. Or like being a DBA for decades that never heard of Informix. Or a programmer for "decades" that has never even heard of Delphi. Like what were you doing in the early 2000s to have completely missed the death of Borland and Pascal and the popular variants? These are big enough events in the industry that if you're in it you're going to be aware of it.