Why do many work details now say that work is easy, happy and simple, and work is more tiring than dogs after going? Is this fraud?

This is normal. It is normal for job advertisements to have such descriptions, mainly to attract more people to apply. If it is written that the work is tiring and the environment is like a mine, then someone will still apply, and it is said that they will show off what they lack. What this company lacks is the humanistic environment, so they will pay special attention to the working environment, so it is right to take a detour after seeing similar introductions in the future.