Indeed. And given how long IoT-ish devices can survive in the field, well beyond their "advertised" service/support life, but still operating normally ... the Unix-likes have been trying to root it out for a while, to get in front of that loooong runway.
@gerowen
Huh - apparently there was a lot of Win95 Y2K work!
http://www.cnn.com/TECH/computing/9905/03/fix.y2k.idg/