First of all, congratulations on your new puppy. Nothing is more exciting that a puppy-breath lick

Enjoy your puppy, sounds like he's in good hands, and that's what really matters.
It is great that a lot of people are involved in rescues and trying their best to give some less priviledged animals a second chance in life. I absolutely applaude that, and hopefully one day I will have a chance myself to be more actively involved in rescues.
But unfortunately sometimes some of these people take it a bit too far, and become all judgemental. Having two rescue dogs myself, I truly believe that a rescue dog is not necessarily the right choice for everyone that's looking to add a new pet to the family. Also, rescue dogs have very different issues. Some of them you're ready to deal with, some of them are not appropriate for you and your lifestyle. I'm sure there's a right person for every rescue dog out there, but it's not necessarily you. And it's very important for people on both sides to do their homework the best they can before taking the huge step of adopting a new pet, whether from a breeder or a shelter/rescue.
I went through something unpleasant myself when I was looking into adopting a rescue dog for the first time. I saw the ad for this little chihuahua. 1.5yo, that was given up because he was incontinent (both #1 and #2) due to a nurological genetic problem. I talked to the foster mom, she explained to me that he has to be in diapers 24/7, and that the diaper needs to be changed every couple hours. She also told me that he drags one of his back legs when he walks, but that doesn't restrain his activity in any way. She said the rescue group's vet has seen him and has told them that he has no other health issues whatsoever. I was really interested in adopting that little guy, but since I knew I had to be responsible and do my homework to make sure that I can provide the right home for him, I told her that I will call her the next day with my final decision.
First thing in the morning I called my own vet, and explained to him exactly what the lady told me and asked for his opinion. He told me that he can't tell me anything for sure because he hasn't examined the dog himself, but from what I told him he explained to me that the dog will have to get a new diaper at least every couple of hourse otherwise there will be a high rist of UTI and skin rash and all sorts of complications fro wearing a diaper for too long and being in pee and poo. Since I work full time and won't be able to change the diaper as often as i should, he told me to think about it twice before going ahead with the adoption.
I thought I did the responsible thing, getting a second opinion and not making a quick emotional decision and adopt him and not be able to give him the care he needs. I thought the foster mom would appreciate the fact that I was doing the right thing. And as heartbroken as I was, I called her that night and told her the whole story.
OMG, she completely lost it on me! In short, she told me my vet was completely out of whack for talking out of his @$$, and that with the attitude I have, maybe a rescue dog is not for me to begin with! She went on and on and pretty much took a big dump on me, and left me in tears all night!!!! Thanks to the wonderful epople in my life that heard the story, and reassured me that I did the right thing, that the woman should be ashamed of herself, and that I should not give up on looking for the "right" rescue dog for my lifestyle. And they were correct. I ended up with not one, but TWO dogs that although they both had issues, my lifestyle did allow me to give them a loving home and work on their "issues" along the way.