You don't read very well, that is twice that you have thought that the letter meant that he SUPPORTED DADT.
Read it again, not only is Romney for homosexual Scout leaders, but in that letter he wants an END to DADT, because he wants the military fully homosexualized.
""One issue I want to clarify concerns President Clintons dont ask, dont tell, dont pursue military policy. I believe that the Clinton compromise was a step in the right direction. I am also convinced that it is the first of a number of steps that will ultimately lead to gays and lesbians being able to serve openly and honestly in our nations military. That goal will only be reached when preventing discrimination against gays and lesbians is a mainstream concern, which is a goal we share.""
Yes, he is saying he backs DADT while he shares the goal of a sunshiney day when there will be no discrimination.
And Reagan helped defeat the Brigg’s Initiative in California that would have banned homosexual school teachers. That didn’t make Reagan “pro-gay” anymore than this makes Romney “pro-gay”, especially in the face of Romney’s historical real-life actions to block gay marriage and protect religious instutitions from gay adoption.