rabbits get vaccs if you choose to have them - i have 6 and none of them have been jabbed for myxi or VHD, i'm just careful with my hygiene.
most sources on feeding rabbits, books etc advise not to give fruits as a rule, due to all the sugar in them.
generally, it's not the vets place to say, unless the offending dietary item becomes a problem, it's the owners place to do the research.
a heck of a lot of these things are in books, leaflets and obviously available on the net, it's the fact that most owners don't care to research their animals before they get them which is the problem.
- i know i didn't do this, as most of my animal gains were unplanned, spur of the moment things.
(my first bun i fell in love with at an auction - i'd recently gone through a very difficult break up and as that little bunny was the first thing to put a smile on my face after that, my mother bought him for me)
but when i had sorted them accommodation, food and water, i went straight out and found out what i needed to know about that animal.
why a bunny fosterer did not have a list of safe and unsafe foods really does not inspire confidence.
the problem is that it's not that the information isn't out there - it's that the majority of people just don't access it.