1) Well, I can’t speak for everypony, but I do. Most ponies are vegetarians, not vegans.

2) Probably not. I remember stealing one of those old Tiger Electronics games from a dentist office. I gave it back.

3) Not generally, but everypony is different. Really, what it comes down to is properly preparing food and not eating too much junk. When it comes to you humans, you generally feed your pets and livestock what’s best for them. On the other hoof, you generally eat junk all the time, or at the very least food that isn’t optimal for your digestive system. Ponies are no different than humans in that regard. If we eat too much junk or an incorrect dietary balance, it can be harmful to our lifespan, even fatal.

But from the minimal research I’ve done after receiving the question, I believe the myth stems from tomatoes and potatoes being classified as nightshade, which often have poisons parts even if some of it is eatable.

4) You’re not a horrible pony for finding something funny. You can’t control what makes you laugh. And you aren’t a horrible pony for fetishising something either, so long as it’s not harming anypony.

No, you’re a horrible pony for bringing it up in general public, especially around others that you’re fully aware have been negatively impacted by the act. Out of everything in the world, murder, rape, and by association all forms of torture are three things that no pony should ever be desensitized to. And by constantly bringing it up and joking about it, that’s exactly what you’re attempting to do, whether you mean to or not.

And make no mistake, rape is torture.