"love the sinner, hate the sin" isn't an indication of love. It's a justification for those who believe 'gay' = 'sin'. A justification so they can feel good about not loving us. In my opinion.
If you engage one who professes to love the sinner - hate the sin, long enough, they will cave and what comes out of their mouth is nothing close to love. In my experience.
"Struggle is a never ending process. Freedom is never really won, you earn it and win it in every generation."
Coretta Scott King