As far as I am concerned very few things in life are black and white and sometimes you have to do the best with what you have for your bunny family. Dont forget that things can change at any time for any one of us, so that what you were able to provide before, you may not necessarily be able to continue doing. And many of us could make improvements but that doesnt mean that bunnies in need should be overlooked because you cant give it 100% perfection.
I may have to make a choice between space and safety for a pair of my buns.
Things are rarely a straight-forward choice. If you can take a bun in danger and give it a happy, healthy, safe life, where it has suffficient space for most of the time, that is better to me, than that bunny suffering elsewhere.