Good point, I'm thinking in terms of code quality, which can be seriously improved by using newer language features. I mean, you could write C# without using generics or LINQ or extension methods or a dozen other meaningful improvements, but I can't imagine someone doing so on purpose.
You would get a null reference exception if you unrolled that into a loop, too. You should know what your data is going to look like and if any elements could be null or not. Don't blame LINQ for your lack of null checking.
