[DISSCUSSION] Tanstack Start or just Router with Vite

If you were given to build an application where all the business logic is on an external server (jwt authentication, refresh tokens, crud endpoints...) with a non-js backend framework (e.x .NET), would you still choose start or go with pure vite & tsr ?

What are your thoughts on this, if you would choose Start, would you use the BFF approach or any other solutions?