my dad was a UNIX sysadmin. His assertion- at the time- that we’d be fine, did not live up the vast amounts of overtime he put in in during '99.
(To be clear it was never the then-modern systems, like windows ME, or '95 that were at problem. it was all the old-as fuck stuff… every major institution still uses. Like IRS’s COBOL database… that’s… still being…used.all of that stuff, they needed to patch to make it okay.)