OK, so there are two questions raised by this rather authoritarian stance he has taken.
1. What is an “anti-LGBT attitude?” Opposition to gay marriage is obviously an example, people have literally lost their jobs for holding an “anti-LGBT attitude” on that subject. Apparently, the opinion that Michael Sam is a mediocre football player unworthy of the hype he has generated is also an “anti-LGBT attitude.” Also, it’s apparently an “anti-LGBT attitude” to differentiate between male and female newborn babies.
So, apparently, an “anti-LGBT attitude” is any attitude that does not celebrate every gay person and every gay agenda item or that offends in the slightest way the most hypersensitive LGBT.
2. What does it mean to “ruthlessly stamp out” such attitudes? Note, his language is not “encourage and redirect” but “ruthlessly stamp out.” That suggests both ruthlessness (without pity or compassion; cruel; merciless) and stamping out.
So, he’s kind of saying that people who have the wrong opinions on anything related to LGBT should be suppressed with force and violence.
Is that a reasonable reading of his statement?