I think that, for a technical throwing event like the shot, the long levers help.

Yes it helps, there's no doubt about it, but both of these German are ~180 cm tall, which I guess is quite close to an average height of an international 19+ level shot putter. Belarussians
Mikhnevich and
Ostapchuk are about the same height, but they weight a lot more and not to mention Valerie Vili, vho is in a league of her own.
But as I said, I'd like to see a lot more slim throwers like these Germans, but I guess it's fact, that it is easier to train strength requiring events while you're bulking. Quiker Recovery and better results.
Vita Pavlysh is the shortest shotter I remember, but we already talked about her in a different topic, and there's no doubts how she compensated her short frame.
One thing what has wondered me in women shot, is the absense of spinning throwers. In men they seem to be majority, but in women it is rare to see somenone using discus technique. Why is that, I have no idea.