So I am curious, like to a software engineer who has never learnt much of stats how difficult has it been for them using these things in the field to solve prob

So I am curious, like to a software engineer who has never learnt much of stats how difficult has it been for them using these things in the field to solve problems with, if they are any doing so? Like do they have a problem because they don't have a grounding in stats or do these things pretty much "work" assuming the models are coped to fit the problems.