LOL, yes. Mind you, due to older Fredersdorf travelling back within his own life time, we'll never know what ramifications the early death of Fritz has on overall German history even in the 19th century, let alone later. It might or might not depend on the unsolvable question as to whether Heinrich without Fritz in his life becomes his best or worst self. If you believe in the timeline being elastic but eventually stable, Prussia's rise to European superpower still happens, just with Heinrich as Prussia's Richelieu (to AW's Louis XIII), and hence everything else.