I completely agree! I also have to wonder if naturally hot/forward horses typically get a lot more instruction[?] on how to deal with their anxiety...
For instance, we board at an Arab barn with mostly halter/WP-bred Arabians - some of which have relatively impressive bloodlines and titles to their names. A few of them are definitely hotter and are treated as such - they are handled by more experienced people when they leave their stalls/turnouts, everybody pretty much keeps an eye out for them in case they do something dumb, etc.
Fabio, on the other hand, is treated like he'll be fine with everything..and he usually is, if "fine" looks like him disappearing mentally. Usually, when he spooks or bolts, no one is prepared and he's actually gotten away from the BO [who trains those Arabs and is very good at it] a few times because she wasn't expecting him to be silly. And it becomes a vicious cycle - getting away, in effect, rewards him for being worried and people figure it was just a one-off, weird, situation, so it ends up happening again, and again, and again.
The BO is finally getting the hang of him [after he almost double-barrelled her in the face because she did the leg straps on his blanket around his legs, vs criss-cross... :icon_rolleyes: ]and I'm thankful for that, but it's taken 6+ months. haha
Those Arabs are getting a lot of constructive guidance about their fears - "no, you cannot run away from your fear, here, check it out! There's no need to be scared."
While Fabio is getting a lot of not-so-constructive advice about his fears and how the scary things go away if you can escape from them. From his attitude and go-to behaviors, I have to guess that that's how a lot of his life has gone.
But I don't know for sure, that's just kind of my theory.