Speaking for myself, I'm not offended. I might even get to the point were I'm downright impressed.
I know you were thinking of getting a Heeler, but if I had been in your shoes, I'd probably be sitting here right now with the same dog you've got.
That little guy is going to have some health issues, if nothing else from the starvation alone. But it sounds like you've got a vet involved in that part of his life.
And Waylon could have some issues in his training as well. Its hard to tell if he was abandoned prior to the first 8 - 10 weeks of life where he really needed to be with his mother and siblings. This time is very important for puppies to learn socializing skills. Certainly the fact that he was on his own so early in life is going to put him behind in his development that he'll need later in life. But I'm sure if you put in the time required, he will get over those hurdles as well.
Old Fart Advice Alert!!!!!
Having said all of that, I hope you know that the commitment you were going to make with that Heeler pup just got greatly multiplied.
A well adjusted healthy puppy is a big chore, much like having a human child. Its just that a dog happens to have fur and will most likely always walk on all fours.
But Waylon is going to be like adopting a special needs child, warts and all. He is probably going to have a better life if for no other reason that he will be getting fed regularly and will have shelter. But if he is going to have the best life possible, you are going to have to do a lot of research and put in a lot of time to help him become a well behaved and sociable adult. Once you've helped him get to that point, he will have a happy life.
I'll wish both of you all the luck in the world. Keep us up to date on Waylon's progress. I want that chance to be impressed.
I'd be happy to discuss any issues you're having along the way, so if you need to, please PM me.