AITA for not caring about my alma mater doing well in basketball?

I'll make this short. My mom texted me the other day asking if I saw how well the college I graduated from was doing in the March Madness tournament. I told her I really didn't care because I don't watch any sort of sports. She proceeded to send me a bunch of text messages saying that I should care because I graduated from there. I replied " I was under the impression I went there for the education, not the sports." This did not make her happy and she told me (in these exact words) " I paid a lot of money for you to go there so I figured you would care about how they were doing in basketball. But if you don't care then I will root for the other team" I basically sent her the laugh emoji back which was probably crappy on my part, but seriously what the heck? Maybe I was the a-hole for how I responded to her, but I don't think it's crappy on my part to not care about how my alma mater is doing in sports. I normally have a great relationship with my mom and this just really sent me for a loop. AITA?