No, since year 1 being 2023 solar years ago is a Christian thing, humanity does not agree on this. Among others, Japan, Korea, China as well as a whole host of Muslim countries do not.
I would say it's a secular international standard of Christian origin, similar to how "information" is an English word even if it's actually a French word. The origin of concepts is important but usage is what ultimately defines them, not etymology. The exceptions prove the rule and most of those countries only use the other calendar ceremonially, and the ones that don't are still familiar with the Gregorian calendar.
Regardless, just because the standard is not used by 100% of humanity doesn't justify programmers coming up with their own calendar instead of using the obvious choice. It's unnecessary.
Regardless, just because the standard is not used by 100% of humanity doesn't justify programmers coming up with their own calendar instead of using the obvious choice. It's unnecessary.