I'd agree that on his day, Ryder is a great ruckman, contributes around the grounds / roves, and can snag 2 or 3 goals. I've never bought into the hype that he is a CHB or a perma forward though and there is a gulf between his best and worst though, and we see more of the latter.
Talent only gets you so far.
Let me add to that - he is much more suited to the first ruck role.
Port should look at trading Lobbe imo