The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
Did he wrong me or is a 596 alright for my situation?
A 9'6" rod could be a nice compromise if you got used to it.
If you're planning to fish, say the Deschutes or Crooked Rivers and the Cascade Lakes, a 9'6" #5, is actually a reasonable and practical choice in terms of casting distance and line management. Other places out there, like some of the smaller rivers, you may want a somewhat shorter rod.
So, no, I don't believe you necessarily got "misled" regarding this rod.