I do agree that most of the younger vets and vet techs have very little horse handling experience. I am currently a late-in-life DVM student - and I am pretty amazed at how little true horse handling skills most of my equine-oriented peers have. Some of them have zero experience and want to be horse vets. I don’t know how that works. Last spring, one of my peers, who says she wants to be a integrative medicine equine vet - was completely impressed when I showed our work group how to worm a horse and pick up a foot. Seriously.
At the same time, in my time leading up to to vet school, I witnessed rough housing from some older folks in the profession. At a major equine referral hospital that I worked for, the head vet tech in imaging got rough with the horses on a daily basis. If they didn’t move when she wanted them to, they were promptly smacked and called an ugly name. It sucked to be around and witness with my hands tied as I was a nobody and had no voice there. Most of these horses will move this way or that just following very gentle body movement from the handler. Rough housing them serves no purpose but to get them all upset and stressed and then of course, easily triggered. And if they just need to be sedated, then sedate them - but don’t start with all the slapping and kicking their bellies and then calling them nasty names. But what did I know…
At any rate, I would have been quite shocked had I been the OP in this scenario. I am also one who, when using a pro’s services, tries to be polite and helpful. It is very hard to instantly switch gears into protective mode when someone like this tech decides to abuse his/her authority/position. Nobody wants to be labeled as a “crazy” client who coddles their horses. Nobody wants to potentially burn bridges. In any event, I would have been PISSED, if not before the vet’s “deserved it comment,” then for sure afterwards, and that would be the last time that practice came out. I would for sure let the practice know the reason for my leaving them.