1.For example, it could be set so that only backpacks of netherite grade are indestructible and will not disappear in the void. This way, it can avoid lag and even crashes caused by the accumulation of a large number of ungraded backpacks dropped from mob farms.
2.It can be set so that backpacks worn on the body will not drop when the player dies.

Upcoming update will prevent backpacks from dropping from entities. The backpack will drop only if player kills the entity, it it's mob farm or any other modded block that kills entities, it'll prevent dropping to avoid lags