He wrote 02022. It's the year in a Long Now [0]context, avoiding the Y10K problem that's just around the corner.
But as soon as you put a leading 0, (besides confusing people) you seem to be telling people to definitely use arbitrary fixed lengths for years and analogous purposes. Even though they weren't necessarily doing that before.
Sincerely,
"neilv "Anyway I'm creating the Long Long Now Foundation to solve the shortsighted 5-digit year issue. Look for more news in Q000001 of 002026