Most notably, this is laying off their entire acquisition of Weta Digital which was an audacious $1.6B purchase. After which Unity did nothing to take the proposed products into the marketplace.
Just Weta FX - those were the guys and gals that used Weta tooling for producing films and such. Not Weta Tools - those are the guys and gals building and maintaining the Weta tools
"Unity welcomes Weta Digital’s world-class engineering talent of 275 engineers that are known for architecting, building, and maintaining Weta Digital tools and core pipeline."
So it just seems they have just thrown away $1.6 billion. If they were unable to commercialize any of their tools while they still had the people who built them it will be entirely hopeless now.