Besides OpenOffice, there is generally reduced downloads of both OpenOffice and LibreOffice. This is not surprising.
The world is moving past system-installed, standalone editors, saving them into a file and exchanging them over emails. The convenience that comes with editing, sharing and collaborating right from the browser is picking up speed, and it's a good thing. We have unlimited version history and the social features (comments, reactions and data tables, with ratings and upvotes as column types like in Coda / Notion) is unmatchable with what a traditional word processor can offer.
The world is evolving into a different future of Office apps and Apache's projects don't fit into that ecosystem.