Ford Transit from 1988 below photos. Worse rust?

Hello dear community, would like to buy a Ford Transit camping bus. He just got new TÜV, with the note “ground group rusted”. Have taken a few photos “down front”. Do you find what you see in the pictures frightening? Or is the OK and for such an old vehicle (BJ 1988) okay? Thanks for any opinions and many greetings! alectronix