Personally I prefer being referred to as autistic as "having autism" makes it sound like a disease to me. In my experience what autism does to me is to make me who I am. It's a collection of traits that we have labeled autistic that is part of shaping my personality, for better and worse. Some traits are annoying to have sure, but everyone has annoying traits(to have or for others to have), mine are just incidentally put in a box and labeled.
The counterargument I've heard is that I shouldn't let it control who I am, therefore it's something I have, but that sounds silly to me because it is me. I tried all my childhood not to be weird and it only made me more insecure and unsincere. I'd rather own it than pretend it doesn't "control me".
It must be said though, it's not something I care very much about and would probably not have noticed much hadn't I been corrected by a social worker when I referred to myself as autistic and explained why it shouldn't be used.
Sam had the ring for just a moment before he started fantasizing about leaving to come back with an army of hobbits to take mordor by force and making it into a garden. He barely managed to give it back to Frodo who had been carrying it all this time while it slowly chipped away at his mind having to constantly remind himself to not give in to its temptations while it was punishing him for not doing so with constant torment.
But sure he was just useless, go Sam whoo!