The “not that there’s anything wrong with that” episode of Seinfeld kind of summarizes the attitudes at the time. I don’t think the majority of millennials ever were against gay people (I’m sure there were exceptions regionally) but there was heavy stereotyping, which of course was a form of othering. And yeah the 90s were very no filter in general. At this time people viewed poking fun as a form of acceptance. But it took some time for the stereotypes to die down.