T-shirt fans are fine. T-shirt fans are usually people that didn't graduate from the school or any other school with a program to support. The problem is, like @Bobcat2013 pointed out, we have TXST alumni who are T-shirt fans of other schools.I get the UT hate. But I don’t get people talking trash about T shirt fans lol. We would be lucky that people outside of who graduated from here are rooting for us, buying merch, supporting the university and programs.
If TXST didn't have a football program, or were D2 heck even FCS, then it wouldn't be as big a deal. However, TXST is now in the same division as UT. You should root for and support your alma mater over another university in the same division.