It initially was that. Also the name wasn’t meant to stick around forever.
But, out of a sudden, between updates, not even the new website URLs ready?
I don’t follow Minetest development that closely anymore, but last time I checked there were no issues or pull requests on their GitHub, nor something official regarding a name change in the forums.
This feels like there are just a bunch of people haphazardly deciding there is a new name now.
There were plenty of those threads and discussions happening during the past few years. This is a constant topic that came up in the forums and sometimes GitHub over and over again.