if it's not exactly 1000 words, then no skill is involved and the writers may as well be published by Penguin or HarperColins or something.
[2] Write 1,000 words about it by August 31st, 2026.
this is 1 of the two constraints. you may have to rework sentences. the skills exercised are these efforts
My personal instinct is to interpret it as a minimum of 1,000 words -- but it remains ambiguous.
EDIT: After reading the site's content I think they may be targeting _precisely_ 1,000 words.