I would say that families with lower functioning kids do have it harder in the physical sense, trying to restrain youngsters, keep them safe from harm, the level of restriction and dealing with basic self care measures in, say a 12yo boy. That is surely one sort of struggle which families of higher functioning kids do not have. Higher functioning is maybe more about 'management
My high functioning son is 10 and still requires my help to wipe his bum, he frequently is in a pooey mess.
He smashes things, breaks furniture, attacks his siblings and often needs restraining, he is incredibly strong. He is not road aware. loads of other things but you get my drift.
Higher functioning does not mean you don't have any of the above problems, it just means you don't have a learning difficulty and you have speech.
It isn't easy for any of us, we all struggle, some in the same way, some in different ways.
SN trumps is never helpful tbh.