Have you read any article or seen any news covering free/libre software? They always refer to it as “open source” (when they are not saying free/libre). The biggest companies always say open source, including Google, Apple, Microsoft, Meta, etc. You need examples? Check any libre code they themselves produce. They refer to it as open source. You know what the project that develops the libre core of Android is called? It’s called “Android Open Source Project”. No kidding. Now show me a project of equivalent size that calls itself “open source” despite not being libre. And no, OpenAI does not count, “open” is not the same as “open source”.