I wouldn't worry; they won't be using the data to determine whether anyone is an awful owner! But by matching up various characteristics such as long term health over a large database, they can tell whether or not certain conditions/behaviours etc are more or less common in rabbits kept in a certain way (type of housing/exercise, diet, handling, companionship, neutering etc).
So for instance for buns with ongoing dental problems, they might discover that there is a higher incidence of it in buns who live indoors/who eat a rabbit mix/who aren't neutered/who don't have a run on grass (I'm making this up BTW, not suggesting that any of these things are true) or that grumpy rabbits are usually unneutered and live alone. Or they might be surprised to discover that the highest incidence of grumpiness is not in unneutered females as they may have assumed, but is in fact in neutered males in a group, for instance. It's only by having an enormous database with all the permutations that they stand any chance of matching up cause and effect and seeing what factors may have an impact on bunny health and wellbeing
There will always be buns who are just a bit 'special' and whose conditions are nothing to do with the way they are kept, but there are also plenty of instances where it is, or could be the case - and that's what they are trying to determine. Should be interesting
