I think it can be down to something simpler than that.
It's cheaper. Consider the life support and space requirements of someone frozen vs not. Even if you go nutrient and caloric dense on genetically engineered foodstuffs, it still has mass and volume to be accounted for. And you'd need more water and the associated life support systems.
If they're being unfrozen on arrival, less space and mass used up for living quarters, showers, toilets, etc, for people other than the crew.
Since we're not in a Star Trek environment (replicators supplanting the need to carry food and water in storage)... all that adds up. More mass, more fuel, more cost.