The chart of accounts is the backbone of every report you will ever pull. When it is generic, every month of bookkeeping inherits the ambiguity.
What a good structure does
A deliberate chart of accounts maps to the decisions you actually make — which products are profitable, where cash is going, what to cut. It groups accounts so your P&L reads like a story, not a spreadsheet dump.
The cost of getting it wrong
Re-categorizing months of transactions is slow and error-prone. Building the structure correctly once is the cheapest insurance in your books.