Not true. There is certainly room for testing the decision and trying out other options. There is also something to be said for taking time off to study for the MCAT, shadow, volunteer, and work. There is also something to be said for developing outside interests and ways to relax and unwind. I interviewed a guy who after completing a post-bac & taking the MCAT went to cooking school for a couple months to indulge in a hobby that he had not previously had time for. I might have been a little jealous. 😀
On the topic of family businesses:
I worked in a casual, part-time basis in a family business from childhood through my mid-twenties. A family business is a huge investment... most of my family wealth's (little that there was) was tied up in that business and it behooved us to protect that investment by providing good customer service, a quality product, and a money back guarantee. Every one of us was responsible when we were representing the business to operate at a high standard of excellence. When things got busy, we might be called from whatever we were doing to be "on deck" to help out. It isn't what I'd think of when I hear the word "nepotism". And being handed a position in a family business can often mean sweeping floors, taking out the trash, stocking shelves, answering phones, and making deliveries. If someone involved in the business becomes unable to work, it makes a huge difference to the survival of the business to have someone who knows the business to step in and help out either temporarily or long term. This is the sort of experience that adcoms have in their own lives (working in stores, restaurants, factories, farms) and it is what they bring to bear in reviewing applications.