Well, I have wooden hutches, and well, yes, the sides aren't a lovely sight, but so what, that doesn't hurt or stink, just dried up white spots. I wash them down about once a year.
Now I soak the boards of new hutches with a mixture of linseed and sunflower oil, that helps a little. The lower 4" are covered with a strip of stainless steel (since I get that for free from work), but that's more to direct any pee to the pans underneath.
I'm not sure those coated wire shelf will survive rabbit pee in the long run, anyway, it would be good enough for many years. Thanks to the discussions about chickens in wire cages over here wire floors, let alone wire cages, are pretty much considered animal cruelty by people with no clue, I use a oil treated wooden grate as floor.
I don't have any problems with Cocci, may it be thanks to the local climate, or because all rabbits here are kept here that way for ages, so there would be quite a resistance. That might be different in other regions, and other breeding lines.