As a data architect in a big company, I cannot tell how harmful such a stupid data format CSV can be. All the possible semantics of the data has to be offloaded

As a data architect in a big company, I cannot tell how harmful such a stupid data format CSV can be. All the possible semantics of the data has to be offloaded to either the brain of people [don’t do that! Just don’t!] or out-of-sync specs [better hidden in the CMS of the company that the Ark of Alliance, and outdated anyway] or obscure code or SQL queries [an opportunity for hilarious reverse engineering sessions, where you hate a retired developper forever for all the tricks he added inside code to circumvent poorly defined data. Then got away to Florida beach after hiring you.]