I think you nailed it on the head. The expression isn’t technically ambiguous, there’s exactly one solution, and neither is the notation incorrect, just unconventional. In this case though, forgoing convention makes the expression typographically misleading. Hence a reason why we have these conventions for writing out expressions in the first place: to visually reinforce the order of operations thereby making expressions as easy to read as possible. So it’s not written wrong per se, just unnecessarily confusingly.
I think you nailed it on the head. The expression isn’t technically ambiguous, there’s exactly one solution, and neither is the notation incorrect, just unconventional. In this case though, forgoing convention makes the expression typographically misleading. Hence a reason why we have these conventions for writing out expressions in the first place: to visually reinforce the order of operations thereby making expressions as easy to read as possible. So it’s not written wrong per se, just unnecessarily confusingly.