I prefer to track each bill and utility individually, so I itemize them rather than using the broad “Bills & Utilities” category, which is too general to be useful for budgeting or analysis. Once itemized, the system category serves no functional purpose and currently cannot be hidden.
It would be valuable to either allow unused system categories like “Bills & Utilities” to be hidden, or give itemized bill categories an option to selectively roll up into that system category for simplified views and graphing. This would preserve detailed accounting and budget control while still supporting high-level visualization when needed, without breaking data integrity or requiring recategorization.