Yeah, I understand where you're coming from, but I raise an eyebrow at one pre-vet (or just accepted pre-vet in this case) doing that to another, especially given the context that some of these people might be brand new to vet med. That's why I say to think it all you want, but don't act on it. Plus, you're also a doctor at this point, so hearing it from you means a heck of a lot more than hearing it from another pre-vet if someone really had to tell me I should give up. It'd make no sense to do it the other way around. I get everyone has their opinions, I have them as well. I just know I'm in no position to determine who deserves what/who will succeed. I know for a fact others have said I don't deserve to be where I am behind my back, and I have been told to my face that I won't pass vet school. I'm sure people on here have thought similar things about me as well.
Plus, there's a difference between being judgemental and saying "hey, we don't actually make any money and sometimes our lives suck and you don't seem to realize that, maybe you should get more experience/reconsider."
Trust me, I get it! You have a lot of significantly more frustrating things coming your way though haha. Just stay humble. Just my opinion, but it's not ideal to feel you're better than the person next to you, especially when that person is brand new and you're a bit seasoned. if they don't want to take advantage of your experience while they still have you around, then that's their own fault 🙂