ACTUALLY, several measures were taken by several major computer and IT companies to update their systems in the late 1990s, just before Y2K, to avoid time formatting and storage issues. The event itself wouldn't have been as catastrophic as the conspiracy claimed, but the bugs still could have potentially caused massive, massive damage. The US & UK governments both passed bills and laws to ensure this wouldn't happen:
https://corporate.findlaw.com/law-library/year-2000-information-and-readiness-disclosure-act.html
The panic and hysteria about a world-ending apocalypse Y2K was obviously a bullshit grift by the 1990s equivalents of Alex Jones, Katie Hopkins, etc. (who play right-wing cartoon characters for money), but there were several genuine administrative errors reported in the aftermath of Y2K despite the efforts. Just one example, 154 pregnant women in Sheffield were sent test results telling them their babies had Down's syndrome. Imagine something like that happening in every city in the UK because the millennium bug was ignored, and now imagine how much that would end up costing the NHS.
The lesson is to prepare properly.
You absolutely did compare climate change with Y2K; don't try to pretend you didn't.