Earlier quoted context omitted.
I mean, this happened a long long time ago. LibreOffice inherited approximately 100% of developer effort. The problem is that Apache is effectively lying about OpenOffice still being a thing, and trapping less-savvy users who aren't aware of this context into an office suite frozen in time in 2014.
Another part of the problem is that the "OpenOffice" brand is still strong. Lot of people continue to talk about OpenOffice and look for it on Google. Oracle just managed to kill a strong FLOSS brand. But, in some way, the LibreOffice fork energized the community.
Ironically, one of the most anti-Microsoft companies ever unwittingly managed to do Microsoft a massive favour.