Personally I don’t know anyone who keeps a stallion that has a bad disposition
Oh I do … :rolleyes: … but short of someone going to visit and getting up close and personal with him, they arent going to know because the video footage sure wont show it …
I sent Panoramic away to “school” for a few weeks and I kept hearing how everyone loved him there. He “didnt have a mean bone in his body” and “could he stay for awhile longer?!” But - when he first arrived at my place, and the mares were walking by him and stabled across from him, he went absolutely frantic for the first few days. He didnt understand how mares could be so close to him and he wasnt breeding them. Now - he just hangs out and nickers to his favorites as they come by and watches to see who is coming in next … 
Guaranteed Gold is there now for a few weeks and same thing. They adore him and said he is so quiet and mellow its “like leading the dog around for a walk” when they turn him out and bring him in. And funnily enough, out of all the mares that come by his stall several times a day, he deep in his throat nickers to all of them when they come by but he goes gaga over the retired GP mare who is heavily in foal, every time SHE goes by. He’s picked the best mare in the barn to covet - good boy! 
Its really nice to hear what other people are saying about your stallions when they are away from home and they see this is how they behave day in and day out on a consistent basis …
… with no “prep” or sanitization or editing required … 
I think - for the most part - due to the socialization our show and Sport Horse stallions have - being housed in the same barns with the mares, turned out beside the mares, shown among mares and handled like a normal horse for the most part, they are very much a part of the overall herd, and understand breeding duties as opposed to stallion duties. All of my stallions have always been turned out in their paddocks beside the mares, separated by a 10’ alleyway and I have NEVER had an issue. They all hang out together on their respective fence lines and I think it makes for happier, well adjusted stallions
And I think where stallions get such a bad rap is when you look at how SB and TB stallions in race breeding facilities are managed. Totally segregated, only seeing the mares during breeding time so they know when X and Z happens, and they turn left, they are about to jump on a mare’s back and it consumes them. Years ago I was going to lease a very well known TB stallion that came from a very reputable TB breeding facility and when he arrived and was put into the main barn that also happened to have a mare in foal across from his stall, he literally went berserk and was slamming into walls, charging the front of his stall with a full erection the whole time. He didnt understand how he could be 10-15 feet away from a mare and not be expected to breed her. He wasnt a bad stallion, per se, but he was never allowed to understand how to be a GOOD stallion and co-exist peacefully with the mares and THAT, in my opinion, is how so many of them get bad reputations. Not through inherent bad temperaments - but from man made problems that have been created with them
And yes there are some lines that are known to have “tricky” temperaments. Ribot, Storm Cat, etc come to mind but you wonder as well - were they simply super sensitive stallions that if handled by a Sport Horse person and allowed to be part of the herd from Day 1, would they have behaved and acted far differently then they did?