The way these issues are discussed, you are a bigot against all these LGBT types, if you oppose same sex marriage.
The liberal presumption, is that there is no other reason to oppose homosexual marriage, unless you are a bigot .
That’s normal also.
If you disagree they always have a label to slap on you.
Antivaxer (Covid)
Putin puppet (Ukraine)
Racists (DIE narrative, affirmative action)
Reckless and irresponsible (ignoring social distancing rules)
Unpatriotic (Patriot Act)
Sexist / misogynist (not supporting every feminist idea)
Homophobic (not supporting every LGBTQIA idea)
Science denier / climate change denier. (Questioning climate change)
And many more...
It’s a form of a personal attack. It’s a way to exert pressure to conform by attack you without actually creating an argument.
But... Here’s a little truth I learned. When people have no rational argument, when they know their position is unsupported by physical evidence, a timeline, empirical measures or witness testimony, they resort to fallacies like this even if it’s a group of people or so called experts.