Seems a rather extreme response and surely only impacts you negatively? Why couldn’t you just say “sorry that doesn’t work for me” and look for a situation that does?
I have an account. I have dogs and foster dogs. I was looking for dogs to be friends with a timid dog and wanted certain breeds and personalities I thought would work well with her and bring her out of her shell.
I found the people who tended to contact me were mostly looking for very consistent dog support - holiday cover, walking a dog when their work schedule now meant it was left a very long time… things like this. Also, some who were very desperate: changed job and didn’t know what to do with the dog and couldn’t afford daily daycare, had a progressive disability and couldn’t walk their dog...things like this. You will probably hear the odd sad story. I had to trawl the profiles and select dogs I deemed a good fit. But I also think my requirements were unusual.
I think it really depends how you view society generally. If you use apps like olio or meetup, believe in community and believe most people are fundamentally good you can understand why it’s a concept that works. Lots of people love dogs but aren’t in a position to own one full time. Lots of people own dogs but often feel their dog could have a better lifestyle if it had more focus and attention.
I have borrowed a couple of dogs. You usually meet the owner, have a walk, a chat. One came for tea and presumably to homecheck me. It’s pretty straightforward. It’s perfectly normal - no different to making a new friend at any other club. You can get the feel for people pretty easily. Always communicated via WhatsApp.
Would I loan out my dogs? No. But I also wouldn’t do lots of things others will. If I was a person with no network/a restrictive job maybe I would have to 🤷♀️ I’ve never talked to an owner who didn’t clearly love their dog.