Second that there are things going on that you have caused, without meaning to
And this is one of them.
As for horses being ill about not being fed? Possible.
If they are stall horses, very likely. And while with a more experienced owner this might not have happened, could have.
If they are on good pasture, then no excuse.
But liken it to if I came and roused you out of your house, no coffee, nothing and expected you to jump right into work.
If feeding was issue, you could have give even 1/2 cup of grain first.
You ignored signs horses were in a snit about something, and would imagine they don't really have much respect for you in many areas, that you are just not picking up on.
Horses make me a better person.