I have to say I agree with this, and I will even go so far as to tell something many here may not know...
3 years before I got Chloe, we brought home a cute little mini schnauzer puppy from a local breeder. I had been wanting a dog for a long time (read my blog about how I struggled with the decision to get Chloe.) At the time I brought home that puppy, I had just gone back to college to get my degree. After two days, I realized I had taken on more than I could handle. He was an absolute doll, and as precious as can be, but I realized that my schedule at that time made it so that I could not give him the attention he deserved. I realized that 1 day into it, and I think I did the right thing returning him. Thankfully, his breeder took him back.
Now, when we got Chloe, I had already finished school, and I found myself with a lot more time on my hands. I had the time to devote to the training and socialization that new puppies require. I KNOW that I am a wonderful dog mommy to Chloe, and her breeder told me several times that she was so glad she went to such a wonderful home. What a difference it made when the time was right. I had the time to train her properly, and now we cannot imagine life without her. Even now, especially after going through the puppy days with Chloe (she's almost 2 now), I can see even more clearly how I did the 100% right thing before. It had been the wrong time when I brought home the mini schnauzer, and I did not realize it until I had him home.
Did that make me a bad person and not a good home for Chloe? No.
Was it a pain in the neck for the schnauzer's breeder? Probably so.
What I'm trying to point out is that people aren't perfect, and so many do not realize what a commitment it is to bring a dog into their homes. That fact alone doesn't make them bad people. Whether they are lying or not, they did the right thing in bringing the puppy back, and you did the right thing in taking him back.