Well then it's a good thing Baby Beaux is not about to be my purse dogI've met some very sweet and well mannered chihuahuas, and I've met just as many yappy bratty ones.
I think it really depends on how the dog is treated and trained. Most small dog owners don't bother to train them and treat the dog like an accessory.
Little dogs also can't defend themselves like larger dogs can, so people don't always respect them. Which is why they can be especially snappy with children.

He'll be my buddy, just like my other dogs. Treated and trained like a dog.
Most people were surprised to see my fluffy designer dogs out in the yard roughing it out with the big dogs

They were all the best of friends, Danny would wrestle with my shitzu using his whole head against her whole body.