I think the only observation I’d offer some disagreement about is describing his play as “above average” - though if you mean relative to rookie QBs making their NFL preseason debut, you could be right.
I thought Haener showed promise, however, and I think that’s all there is to reasonably hope for at this point in his journey.
His arm strength looked fine to me. It wasn’t something I really had concerns about but he had good velocity on his sideline throws and he rips the ball quickly and with confidence. If he doesn’t pan out, it won’t be because he can’t make the necessary throws.