It sounds like you've been through a lengthy and somewhat ambiguous process with McKinsey for the Product Owner position. The recruiter's responses indicate that there may be some internal challenges and restructuring happening within the company, which could be causing delays in finalizing the hiring decision.

Based on the information provided, here are a few possible scenarios of what might be happening:

1. Global Restructuring: As the recruiter mentioned, McKinsey could be going through a period of global restructuring, which can impact hiring timelines and decision-making. Large-scale organizational changes may require additional approvals or adjustments to hiring plans.

2. Hiring Freeze: The mention of a hiring freeze suggests that McKinsey might have temporarily paused new hiring initiatives due to the current circumstances. This is not uncommon during times of uncertainty or significant internal changes.

3. Decision-Making Process: The recruiter's statement about difficulty in getting the entire team onboard or together might indicate that the hiring decision involves multiple stakeholders or decision-makers. Coordinating everyone's schedules and aligning on a candidate might be taking longer than expected.

4. Uncertainty: The recruiter's ambiguous responses might also reflect a certain level of uncertainty within the organization. They might be genuinely uncertain about the exact timeline or details of the offer due to the ongoing changes and complexities.

Given the current situation, it's understandable that you feel confused and anxious about the status of your application. My advice would be to stay patient and maintain open communication with the recruiter. While it might be challenging to get concrete answers, expressing your continued interest and understanding the situation could help keep you on their radar.

Keep in mind that organizational changes can take time to settle, and this may affect the overall hiring process. In the meantime, you might consider exploring other opportunities while waiting for updates from McKinsey. Remember that the job market can be dynamic, and you don't want to miss out on other potential roles while waiting for one opportunity.

If you have any specific questions or concerns, you can always reach out to the recruiter and politely inquire about the status of your application or any additional updates. They may not have all the answers, but showing your enthusiasm and interest in the role can leave a positive impression.

Ultimately, stay patient, stay proactive, and continue exploring other possibilities while waiting for McKinsey's decision. I wish you the best of luck in your job search and hope that everything works out positively for you.