Summary:
- Apple has resumed advertising on Twitter (referred to as "X" in the article) after previously stopping due to concerns over Elon Musk's acquisition of the platform.
- The article suggests that Apple's decision to resume advertising on Twitter indicates that the company is comfortable with the platform's current state and leadership under Musk.
- The article also notes that Musk had previously claimed that Apple had threatened to withhold Twitter from its App Store, but the resumption of advertising suggests that any tensions between the two companies have been resolved.