I'm not finding anything on the toxicity of the orchids themselves... but I would be worried about the toxicity of the plant food you'd need to use to keep the orchids alive.
I love orchids, so I hope maybe someone with more experience could pop in and give us hope. :o I like to stay safe...
People might buy on impulse from a breeder as well. Buying on impulse in general is bad. As I've said, talk to corporate. Misting is required at least twice a day. None of us like the size of the cages, but we have what corporate provides. If more people speak out, we may get change.
I've said this before guys, but not everyone who works there is stupid about the animals. I am asked to speak with people interested in the chameleons whenever I am available and my coworkers have done a good job of learning from my suggestions. If they aren't misting, they aren't following...
Describe the enclosure, maybe they're not doing something the policy says they should and you can give suggestions. Either way you can give suggestions and make sure it's to the pet care manager specifically. Whether they do something or not is up to them, and then you can nicely talk to...
This blog has helped me a lot. :)
https://www.chameleonforums.com/blogs/sandrachameleon/204-calcium-phosphorus-ratios-common-good-gutload-foods.html
I wouldn't suggest using spinach, it can cause the chameleon to have difficulty processing calcium.