Perhaps a level of familiarity with the convention plays a role, as I have chanced upon the Long Now Foundation and some of its writings. Despite, that was a long time ago. There are competing conventions such as writing the year 2000 as 102000 so as to reflect a common estimate of the origin of our species, which I encountered via kurzgesagt.
I support the author’s rebuttal that if the slightly unusual year number prevents you from taking in the content and its points, you might just not be a member of the intended audience.
There’s no relationship between people who would appreciate the history the author was trying to communicate, and people who aren’t distracted by prefixing a pointless zero before the date.
Unless you really meant that as a snide comment calling GP an idiot.
Either way, maybe the zero prefixing thing is just stupid and not the hill to die on you seem to think it is.