The two sources you brought up are super reliable. I would trust them. I have used a Boston Fern before but it was for my jackson's chameleon, who doesn't eat plants. They need some decent humidity or they will dry up. Granted, I placed the fern in a dry spot and forgot to water it manually...
Chameleon Academy and Casqueabove have tested these plants. They are safe. Glad you are asking questions though--that's good--especially since there are so many bad websites on the internet. Chameleon Academy and Casqueabove are sites you can trust.