Depends on who's making the call for who gets cut. A key part of decimation was that the doomed soldiers were beaten to death by their comrades to give the rema

Depends on who's making the call for who gets cut. A key part of decimation was that the doomed soldiers were beaten to death by their comrades to give the remaining 9 a bloody, lasting impression of their dishonor. If Meta makes everybody sit in a group with their ten closest coworkers and debate until they decide who gets cut it's a lot closer to decimation than if management suddenly shuts off 10% of employee computers.