Only possible issue would be pinching your fingers if you grab it wrong.

However, I would not let my child do fold/unfold as she can hurt her fingers in those little gaps

Just make sure you don't pinch your fingers when folding.

Sturdy design, but pinches little fingers easily.

and she can move her finger, so a near miss.

It does get him up higher, but if he tries to move the step stool on his own, I am afraid of him pinching his fingers.

children can pinch little fingers in the holes and 2) they can fall off if they are not paying attention (often).

YOu dont have press anything, fold anything, break a nail or jam your fingers