We had a monthly fair like this, it was a great event, you got to meet people, talk and ask specific questions, and could find and sell pretty much everything.
But some self entitled *bleep* shut it down. Lots more rabbits ending up in the woods or stove now because it got really difficult to find new owners.
It may not align with your vision of a perfect world, but I never saw rabbits in undue stress. It's just you feeling bad seeing all that wire, not the rabbits. They are more resilient than you give them credit for, that's not such a big deal for them. Not everything looking bad is bad because you can project prejudice and create a narrative claiming how awful something that doesn't fit your point of view must be.
The people going there like their animals, they care for them well. They are not bad, cruel people, in the contratry.
Not the way cute youtube videos and pet sites claim to be the only right way to handle rabbits, but that's a small bubble, often somewhat disconnected from reality.
So, my thoughts: If someone doesn't like it, just don't go there, don't show, don't breed, just enjoy the product of something such fairs are a part of. Don't claim a high moral ground and force your opinion about something you do not fully understand.
Note: With "you" anyone that feels addressed is meant, not actually you
, english isn't my first language.