I don't blame breeders at all for being so hesitant, not one bit!
The sad thing about all of this, is that visiting the rabbitry is where you can learn alot about the animals you could potentially be buying. It's also where you could learn some very valuable skills as well, asking questions, getting answers, etc. I honestly would never hold it against a breeder if they decided not to let me in,
especially now, but it's still the best way to buy IMHO.
It's where you'll see who is sneezing, and potential for fur mites if someone is scratching excessively. I also think a rabbit put in a carrier, and hauled somewhere is not going to be acting, or showing it's true personality, the same way it would in it's own personal space that it's used to, and feels comfortable in. For those, like me, who care about rabbit personalities, and aggressive/non-aggressive, I want to know all that before I buy.
Just like everything else, these are changing times, and I can't see it getting any better. Sad!