Well the "straight pride" movement isnt about countering homosexuality or homophobia like the article implied. It's a rebutle to the lefts copying of the LGBT community and mobilizing them for their liberal agenda. Certainly there are folks who are homophobic or antigay (religous or just hateful) but they aren't involved in the organization or promotion of the "straight pride" event.
Go to any of the gay pride events and other than the celebration of individual openness (not having to be closeted, the purported main theme) theres also activists and recruiters from any number of other liberal causes there hanging on. Open boarders activists, gun control groups, communists and socialists, antifa, and Trump protesters, and Democrat voter registration groups to name a few.
What started as celebration of self identification, fighting back against any shame or stigma associated with ones sexual orientation, has been muddied down to just another liberal american hate fest. The "straight pride " event is just the logical counter protest to the left, although the concept sounds pretty silly and stupid there is a greater meaning other than "dont like dem der gays".
Like everything in America today, what started with pure intentions has been hijacked and made political.