How relevant is this to a single person wanting a corporate front to make small amounts of side money from a website or app? Is an in-state LLC more preferable in that situation? Is any type of incorporation even necessary?
There's no reason to do it in Delaware, except want to part with a lot more of your money. Even if you form the LLC in Delaware, you will have to register it as a foreign entity in your home state, so you're only doubling your paperwork and annual costs.
It's worth chatting with an accountant about this. Many of them offer a free 30- or 60-minute consultation to new clients (or potential clients).