Every businessman is a little more intelligent than the common people because in order to do business a lot of thinking research observation and vision needs to be done. Moreover it is never possible to make a profit in business. The issue of debt is a matter of deeper thinking research and foresight because businesses are for profit now if they can't make a profit with debt then there is no need to take debt. They take recourse to debt so that they can profit from it without spending their own capital. So do not know if they are smart but they are intelligent compared to other common people.
To be successful in a business of course someone must have intelligence in order to make the right decisions for the business they run because without sufficient intelligence of course they will find it difficult to make the right decisions and can benefit the business they run and in terms of doing loans to develop a business, they have of course seen the development of the business so they have the courage to take a loan and develop the business they are running and if they feel that they do not have the readiness to develop the business they will of course choose not to take the loan if they don't need.
We will see that almost everyone who is involved in business in the world is engaged in more or less debt because the most important thing for business growth is capital. So those who want to achieve the desired success in their life but are not able to provide sufficient capital for that success with their own money must involve themselves in loans. However there is definitely a need for adequate research and analysis. Otherwise there will never be a touch of success. But you are right that no one should get involved in debt unless necessary. But their business will be a single business or retail business in that case it will not be possible for them to do large business.