For data storage, yes. But most spreadsheet programs (Google sheets, excel, numbers) also allow you to have dynamic data through the use of formulas, using built in functions or straight code of some variety.
The extra functionality is why you hear horror stories of entire multi-million dollar companies runnning their entire logistics pipeline through a single Excel “spreadsheet” and the accompanying brown pants moment of deleting the master doc and not the working (altered) copy.
Also unknown (they can be known, but frequently are not by users) bounds, xls has around a 65k row limit. These are the weird edges where people get burned and a simple csv/jsonl/yaml file is more resilient to scaling/time.
The extra functionality is why you hear horror stories of entire multi-million dollar companies runnning their entire logistics pipeline through a single Excel “spreadsheet” and the accompanying brown pants moment of deleting the master doc and not the working (altered) copy.