That's a reasonable interpretation, but that is not what Microsoft has said. Satya talks of "30% of the code that is inside of our repos today".
Source: https://www.cnbc.com/2025/04/29/satya-nadella-says-as-much-a...
Source: https://www.cnbc.com/2025/04/29/satya-nadella-says-as-much-a...