What are you talking about? I am a season ticket holder at KU and I do not have to buy any football tickets, let alone season tickets. Don't just make stuff up, that's a flat out lie.
Many KU fans do purchase season tickets to other KU sports as a way to earn more points per dollar than just donating the same amount of money to the Williams Education Fund. Every year, my family buys season tickets to women's volleyball and then donates them to a local high school volleyball program because we get more points than if we just donated the money directly.
All they mean by the "clear the deck" statement is that Zenger has gotten all of the other things that needed to be done (updates to AFH and new dorms for KU hoops, building new facilities for track, softball and soccer, etc...) completed so that the next big chunks of fundraising money can be focused on the football team. And I truly do believe that the additional money spent on the team's facilities as well as the focus on hiring better assistants to recruit better, will result in a better product on the field and more fans in attendance.