The roman definition involved beating 1 in 10 to death by the "coworkers", so no, I don't think 8 weeks of severance and helping them write resumes plus get new jobs elsewhere is a very good definition of decimation.

In percentage yes, but not in the manner of choosing the affected. Or at least one would hope it’s not every tenth person regardless of role, contribution, etc.

I didn't want to like this, but all respect to you for the etymological accuracy and black humour here.