If the electric starter motor will run but fails to turn over engine then yes it is likely a failure of the starter bendix--either it is stuck so that it will not engage or the bendis is stripped. My info shows the starter drive assembly as part #801293.
I was unaware that Toro had moved to a Briggs 2 stroke. Most likely due the shutdown of Tecumseh. Don't have any knowledge of the new 2 stroke but I have worked on some older ones and they were a piece of crap.
About the only way you're going to find the problem is to remove the starter. Having not seen any of the new machines, I am not familiar with the configuration so I can't offer any help in disassembly.
If you remove the top cover, you will see if it is stripped out. If your model is similar to the older models with Tecumsehs, it will be very obvious whether it's stripped or not. This was a common occurrence on the Tecumseh models.