Now you sound like Jerry Falwell.
Apparently you don't get the right-wing emails that call anti-gay bigotry "opposing viewpoints."
It's ok, the both of you wishfully think it's going to help put on an air of legitimacy in the end.
If it were up to me, I wouldn't give a microphone to the military under DADT any faster than I would the KKK.
That would be your choice.
But in the case of a university, there are two relevant things: first, that they have essentially a contractual relationship with the government, second that their job is to teach.
In terms of the contract, they are obligated to promote at the very least those things the Constitution assigns to the government, one of which is providing for the common defense. ROTC is a part of that task. Barring ROTC thus sets the university against the government's duty. It is therefore incumbent on the government to withdraw all support from that university, because the university is setting itself to the task of undermining the Constitution.
In terms of teaching, a university is to allow students to examine all views. Barring the ROTC is teaching that the military is evil (which is how we got so darned many people who would rather run and hide than ever defend their country). The university has no business abandoning its job in that fashion. And if a university is acting contrary to its mission, the government is obligated to withdraw all support and put it somewhere actual learning is occurring.
In a university situation, teaching anti-gay material in the same way that the existence of the ROTC program teaches respect for the mission of the military in defending the nation, i.e. in allowing a club that holds that position, does make it an opposing viewpoint.
But in both situations, the university may decide that not just clubs but classes are appropriate to truly examine that and its opposing views. If a university thinks that the military has become a force more often evil than good, it can institute a class on all the ways the military has screwed up and/or committed atrocities; I'll call it MFU 101, for "Military Fuck-Ups". THe same could be done for the gay issue; I'll call that class WAGBATM 101, for "Why the Anti_Gay Bigots Are Total Morons".
If we have intellectual freedom, it has to be freedom. When it isn't, it's the government's duty to withdraw support.
BTW, I didn't know Jerry Falwell ever addressed the matter of ROTC on campus.