Locked as the OP missed the point of the metaphor. Heterophobia may be just as personally toxic, but the point of the video was to show the weight of systematic bigotry in a way that was more relatable to the target audience.
There is no legally- or culturally- sanctioned mass discrimination against heterosexuality. Trying to debate this will only dig your hole deeper.
But against gay and trans people? The list is long and the specifics vary per region. I shall post one of the more morbid examples: the trans panic defense. Look it up if you need more clarification.
There is a time and place to discuss alternative reproductive strategies and its effects on sexual discrimination. It is not, however, an entry-level discussion; its requisites are a good understanding of the sociology of gender and sexuality, and the biology of sex.
Note: there is no need for punishment. Just move on with your lives and when the occasion comes, discuss these things with more tact.