I assume she meant they won't sell any until capacity increases? Attendance would increase IF they sold APs.
And here's a little news for that cast member, existing annual pass holders ARE currently able to book parks. If they truly were concerned about AP holders taking up all of the capacity, they wouldn't be renewing APs or allowing those who cancelled their APs to now re-buy them. Disney's not limiting ticket sales, not at all. They're just not selling Annual Passes. If one did an analysis I think we would find that, on any given day, Disney oversells the current capacity of the parks. They are not using ticket sale limits to control capacity (has anyone been refused the sale of a ticket, other than AP?). But they are claiming that APs are not for sale because of capacity concerns.