I don't think you can even say that without reading the actual announcement. [0]

Was the acquisition "effectively announced months ago"? or was it the right to acquire the company or pay $10 billion that was announced months ago?

It would be equally relevant if it went the other way. But clearly both of you are confused on what was said they would do in the future (which that was the announcement months ago) vs what are doing today.

[0] https://www.reuters.com/technology/spacex-says-it-has-option...