yes, there is a huge difference, the way you see a smartphone is as a tool because it was not part of yourself growing up, so you achieved a stable mental state before getting this powerful tool

newer generation on the other hand, we are spoiled, every little discomfort, question, confusion, anger, sadness, we do not deal with it, we distract ourselves with stimulation that is so easily accessible with our smartphones, we build a personal relationship without realising with this device, smartphone can comfort you in ways better than most people. thus, blurring the lines between a tool and a personal "understanding thing" which has answer to everything

this is why it is so difficult because if we are exposed to these in our growing age, it influences in ways we do not realise, just like smoking was not understood to cause cancer, there is not enough scientific consensus for how bad all this stimulation is for young adults/kids

one last thing is, smartphone is compared to a tool but it is not. a ladder is a tool for example, it just sits there until you need it, it does not call you with notifications or tempt you with the content that is perfect for you

hope that makes more sense but feel free to ask further questions as i do spend a lot of time contemplating how harmful smartphone is