The separation of Products and Foundry enabled them to eventually be broken out.
The original idea appears to be for Intel to hold then as subsidiaries but it became totally clear that few external customers were willing to engage with Foundry that was not fully independent from Product groups.
So to say Pat was fixed in keeping everything together is simplistic and misleading.
The strategy was set up to evolve and it is still working towards what it enabled to happen.
Pat's exit was likely more due to how he was communicating with customers and TSMC. He got too wrapped up in Chips act politics, and repeatedly made statements to customers that could not be backed up by company capabilities. Any CEO would be relieved for mishandling so many situations.
He damaged the long standing relationship Intel had with TSMC. Intel was one of their first customers and the Bob Swan deal to get access to their leading node is one of the few things that are currently working. x86 would be on a steeper slope to obscurity if not for getting lead products made by TSMC.
Like a lot of tech companies, Intel became focused on protecting the competitive moat based on Finance strategies (e.g. paying Dell not to use AMD) instead of making even greater products.