This is something I see in newbie or extremely lazy code. You have some nested object without a sane constructor and you have to conditionally construct a list three levels down.

This is a fantastic way to make such nasty behavior easier.

And agreed on the question mark fatigue. This happened to a project in my last job. Because nullable types were disabled, everything had question marks because you can't just wish away null values. So we all became blind and several nullref exceptions persisted for far too long.

I'm not convinced this is any better.