Zoom's revenue grew like 10X over the past two years. They had a legitimate need to hire and grow the business, and now the market has corrected and they don't need as many employees. The hiring and firing decisions are exactly what I would expect from someone optimizing solely for the well-being of the company.
It sucks for the people fired, but that doesn't mean the CEO did a bad job. It means you need to be realistic about what your relationship is to your employer.