I don't know. Pre-pandemic, when doing mass layoffs, it wasn't unusual for a company to hold a giant update meeting and let everyone know they're shutting down the division and that everyone's been laid off.
How is this different?
It might surprise you to learn that that would also be considered a dick move.
Shutting down is a subset of reasons for mass layoffs. They are not equivalent.
Disregarding that, it's not very different. What is the implication you're making? That it's good because it's common?