No one in their right mind will bury all of their arms.
The idea is to cache some weapons and ammunition for a time following the coming attempted confiscations should the “rebellion” fail and you be stripped of your second amendment protected right.
That way the resistance will not be forced to tool up and create weapons and ammunition from scratch. It’s not to protect your main battle rifle, but to give you a chance to rearm should you be forced to abandon it to keep your life.
Or an option after they knock your door down at 3am and take everything.