I am ok with rehoming if the animal can have a better life. I'm not a fan of doing it via CL however.
There are fb pages locally with buy/sell/trade and they are just as bad or worse, and the admins are over the top with drama.
I have a cat that I'd love to rehome, but won't because I don't know that she'd be better off elsewhere. I'd never list her on a webpage. If only she'd just own the dogs, her life would be golden!