These are commercial products being deployed.
When I worked at Cerner years ago (now owned by Oracle), there were rumors that the Cerner EMR still could barely handle DST* spring forward, but could not handle DST fall back (where the 01:00 hour is repeated) -- you had do preemptively switch to pen-and-paper for the hours around the switch. I assume this was because someone back in the initial database design used local time instead of UTC for some critical patient-care timestamp fields in the database, and then had a bear of a time getting reliable times out of the database during the witching hour.
* Daylight Saving Time in the USA. And yes, everyone in the USA changes non-networked clocks twice a year because of some "brilliant idea" someone shoved through Congress in 1974.
EDIT: I wonder if Cerner finally fixed it?
The fun / creative part for me is not googling “how to slurp the contents of a file into a string” or “the exact syntax for marking some functions as unit tests” or “the correct order of symbols to specify generic type param”
It’s not “the correct html / css syntax for this basic gui I want to make”
It’s not “how to achieve the thing I’ve done 10 thousand times in other languages/frameworks, but for this language/framework”
It’s figuring the core logic out, building the thing while skipping the boring stuff, playing with abstractions that scratch my itch.
From this pov, AI is the best thing that has happened to my weekend coding. I code recreationally way more than before. Before AI, I would try a new language or framework, and I’d give up halfway because re-figuring out basic stuff for the umpteenth time is boring, it’s not fun at all. Now AI lets me skip those boring parts.
Learning Elixir and fixing a bug in an open source project went from "risk of a long slog over the course of a month with no reward" to "pepper an LLM with questions (debugging errors, understanding syntax, translating code snippets to English descriptions of behavior), write 20 lines of code by hand, write a few test cases, and submit the PR fix".