Will food that is stored in a freezer for a long period of time be safe to eat?

It is not at all safe: At the least we will have a fear of intake that itself spoil the spirit. 

There might be the following problems with long frozen storage:

- package will react whcih may produce dangerous toxins (dioxins)

- deterioration of the product quality (decomposition)

- loss of color

It depends on the shelf life and storing condition; , nothing can be safe forever, even if it will be kept in frozen condition

Frozen food decomposes very slightly over time and will not be suitable for human consumption.