If it is just molasses it will be to feed the bacteria in the soil some extra food other than what the plant can give and the npk.
A nice compost tea would rock there. There is also adding molasses to the flush and I here that rocks so much that I will do that too, today in fact.
Mj is the only plant I have studied that this applies to. So with more than half the growers saying yes I am assuming it cant hurt.
although flora kleen or clearex products interest me more.