Interesting, but I highly doubt a wave will follow. In fact, I presume we see more countries legalize gay marriage before we see more countries reverse on it.
Good over evil.
There are many cultures in this world which wouldn’t even consider normalizing gay behavior in ANY way (never mind “marriage”); while more governments might legalize it, every day in this world a lot of people are born that will oppose it to the death - while many who support it are ageing and dying.
Eurabia has many governments that legalized it, and their countries have growing areas where gays dare not show their faces...