Would I turn it? Probably not.
Could I turn it? Yes. I would do it on my CNC mill to minimize any needed sanding. I've used various ways to mechanically stabilize fragile pieces. Bondo auto body filler works well using Saran wrap liner so it doesn't stick to the wood. Also wax granules melted to fill and stabilize.
Why are you turning it? Sometimes pieces like this are shown, my thought is they were done as a personal challenge or to demonstrate the turner's skill. Most everything I turn is utilitarian and if it happens to be attractive that's even better. A bowl with a void in the side wouldn't be utilitarian.