that is far from the case. common fears of noise, vaccuum and even brooms are common and that is the result of inadequite habituation to daily life. That is very different in a rule vs urban setting. A rural dog it unlike going have to deal with the noise level of an urban setting sirens and the like whereas a urban dogs is unlikely to confront the smell, noises and appearance of wildlife. just a couple of the very real difference that occur.A puppy should be socialized for the situations of being with people and other dogs ,if that part is covered then most any situation is covered
Puppy Socialisation and Habituation (Part 2) How to go about it
Things to do away from home
Go to all the environments you can think of that will help your puppy become "bomb proof" . Start in quieter places and gradually find busier ones.
The street: Expose your puppy to the sound of traffic and the movement of people. Start in quiet side streets and gradually build up to busy ones.
Places where people congregate: Any environment where people tend to congregate to sit and chat will do, so that they have the time to take interest in and handle your puppy.
Children's play areas: This is obviously a good place to meet lots of children (but consult your veterinary surgeon about the appropriate worming programme before bringing your puppy in contact with children). Children should not talk to strangers, so make arrangements with their mothers. Start with just a few children and control their enthusiasm to prevent your puppy from being overwhelmed, which can easily happen.
The car: Plenty of car travel will accustom your puppy to it and help prevent car sickness. Do not let your puppy sit on the front seat or on someone's lap. Accustom it to travelling in the place it will occupy when it is an adult.
The countryside: Accustom your puppy to the sights, sounds and smells of the countryside and livestock etc. (in your enthusiasm don't forget the Country Code).