If it was really over hiring, and the end of ZIRP, why have their financial results been so strong? It’s not like profits dipped to losses from these “headwind

If it was really over hiring, and the end of ZIRP, why have their financial results been so strong? It’s not like profits dipped to losses from these “headwinds” — companies have been strong and AI is increasing demand for cloud services, chips, etc.