Piano is just 300 years old? There's more.

Haydn wrote a gazillion baritone trios

There are quite a lot of aficionados for fortepianos.  Generalizations are always difficult.  Many fortepianists are excellent musicians but in general I dislike the instrument. It sounds like a pre pubescent harpsichord to me.  It’s easier for a sensitive pianist to scale down a Steinway to play Mozart than to have a fortepianist try to project Beethoven 

Great post, @richardbrand .

btw I had posted that Haydn wrote baryton trios