The big attraction is likely having options when it comes to accessorizing your phone. No longer are you limited to what products come with Lightning plugs or forced to use some sort of adapter cable as has too long been a necessity.Other things to do with the iPhone 15 series USB-C port?
Here's a YouTube video that explores some of the possibilities:
View: https://www.youtube.com/watch?v=jjGWKe2rmWQ
The happy part is that the support is already there for a number of devices.