When the government makes applying for welfare hard, they mostly just waste a lot of people’s time and make it so people who qualify for benefits do not get them because the application is too burdensome. Such qualifications don’t boost employment, they just make poor people suffer more.
It’s easier to get subsidies that mostly go to those with higher incomes.
When you make qualifying for benefits difficult, you make it harder to track fraud. The biggest fraudsters are organized actors that know how to get around complex requirements. More fraud is doctors and wealthy people cheating on payments and tax subsidies, than poor people cheating to get food or healthcare.