John Grimek made it to 88 and George Hackenschmidt (The Russian Lion) made it to 90.
I'm not sure there was ever a rule of thumb that strongman or bodybuilders had to live long lives.
Eugen Sandow died at 58 , as did Charles Rigoulot .
Loui Uni (Apollon the Mighty) died at the age of 66.
Hermann Goerner died at 63.
Louis Cyr died at 49 .
Arthur Saxon died at only 43.
Though ,a little later Siegmund Klein lived to 84 as did the Mighty Atom.
You mentioned Hackenschmidt living to a great age,though his greatest wrestling rival ,the American Frank Gotch ,died at the age of 30 ,apparently of syphilis.
Vince Gironda ,who publicly was very much opposed to steroids, lived to 79.
And Larry Scott lived to 75 ,though Bill Pearl is still kicking at 89.
Among Jusup's contemporaries Sergio Oliva lived to 71 ,Serge Nubret 74 , Franco Columbu to 78 and Casey Viator to exactly 62 (not too old).
What's the point of all this? For some of us ,having followed the scene for a while , Jusup's death doesn't feel that premature. Besides isn't the allotted Biblical life-span three score and ten?