I hear what you’re saying but being in a room with 5/6 year olds everyday, this writing just doesn’t seem like something they would do. From the moment they reach reception they are taught cursive cursive so I find it hard to believe that not one single letter is cursive. Even our children with extra needs incorporate their cursive into their non-cursive writing.
Just my opinion of course, but this writing seems a little too good for a 6 1/2 year old.. Not to mention the fact they put 1/2 and that something else I wouldn’t say that age would do, but who knows.
I too have considerable experience of the age group. Not every school does cursive consistently so this varies for children at this age. I have seen 6 year olds do writing this good and equally seen considerably worse.
I think it is possible for it to be done by a 6 year old but as you say, who knows!¬