The problem is these "temporary" gov programs never end. And then eventually they live long past their prime.
Furthermore, as the become the new normal they tend to create unintended consequence. For example, farm subsidies for corn drove down the price of high fructose corn syrup. That made the sweetener ubiquitous.
Similar can be said for home loans and student loans. Once these programs take on a life of their own, the market becomes distorted and eventually bad - unforeseen - things happen.