It looks like it's to help someone manage a company? But I don't understand the use case. Why would someone need Aragon for these services?

Firms or companies exist in order to create value by using resources to create products or provide services.

However, intermediaries and third parties such as governments decrease the output of those organizations by imposing restrictions and creating complex regulatory frameworks.

Aragon was born to disintermediate the creation and maintenance of companies and other organizational structures.

If it doesn't handle the legal aspects of company formation then what good is it if the legal risks are higher than going the traditional route? What sort of companies would benefit from it?

They have a two member team, and neither member has a background in law. Where is their legal expert or advisor? In addition I don't see any advisors at all so I can say the project likely isn't very serious because I cannot discover who is giving them advice.

Do I think companies can be decentralized? They already are. Companies also are global. All of this already can happen using the typical legal mechanisms and any company cannot avoid those mechanisms as a company only exists legally. So for companies I cannot see what Aragon does unless it's somehow a way to blend the blockchain into the management of it. I will say I would have to see actual companies running on this before I can say I truly understand it.

My stance officially on Aragon is you can use it to manage a company perhaps but the best way to do that is unknown because it's too new. It doesn't take away the paperwork aspects, or the need to register, but it might also depend on the laws of each state and or country.