How do you figure? Show the results.
Obama is not anti-gay in general, as most Republicans/Conservatives are (other than those who secretly practice it, that is). The fact that he opposes gay "marriage" is a moot point. There is nothing in the Constitution that discusses marriage as part of the equal opportunity equation.
No results to show, so you then make a baseless accusation.
Obama could end DADT by Executive Order this minute if he wanted to. Obama could treat DOMA the same way he treats immigration and black panther voter intimidation. Instead, his DOJ argues in favor of DOMA and DADT is still used as a political wedge.
The self-deception of the LGBT community on this issue is astounding.