Earlier quoted context omitted.
That’s a straw man argument. Losing 10 people becomes a question of their individual qualifications, losing 10,000 people and this is no longer about individuals. Some of the people who left where underperforming but a significant percentage where extremely underpaid while providing extreme value to average Americans.
The number seems arbitrary. Maybe we should be subsidizing until we have 100,000 more. I'm always skeptical when something is presumed to be a universal good in a way that's unfalsifiable. What metrics would you expect to see if we had too many STEM PhDs? What metrics can we expect to improve if we had more of them?
What the person you're replying to was likely trying to say is that once you get into this size of layoffs its no longer about the individuals and their performances and a claim that all 10k of them are on one side of a theoretical "bell curve" (which btw i havent seen evidence can actually be measured) is big and needs evidence.