The House of Representatives, as the name states, is meant to represent the population of the United States. Therefore, this is only effective if it actually includes most groups in society. This can be achieved if the scale of representation is small and if there is a high turnover.
However, this is not the case nowadays, and this is indeed a problem. A larger scale of representation means people are a lot less likely to be able to voice their opinion to their representatives or influence government in any way. Moreover, the low turnover means that most people cannot hope to become a representative.
