fuck maybe she's bi? (me being delusional)

While it is essential to acknowledge and address any form of prejudice or discrimination faced by any individual, claiming that heterophobia is a pervasive, systemic issue is misguided. The challenges faced by heterosexual individuals can be attributed to isolated incidents or biases rather than systematic oppression. Fostering an inclusive society requires recognizing and rectifying existing power imbalances without creating a false narrative of discrimination that undermines the struggles of marginalized communities

To sum it up your wrong

The heterophobia comment in no way was used as way to mean straight people get suppressed too. And the phobia used in their comment was not related to systemic discrimination in general. Homophobia can mean" having or showing a dislike of or prejudice against gay people" as well as "extreme fear of" homophobia used today is no longer used to identify someone who fears homos but it is used for people who dislike or overall hate them.
For if we dissect the original comment the "not the" can is obviously the start of a joke and should not be taken seriously, but it did. You claim that straight people cannot be oppressed is wrong when taken under thought straight people include people of various backgrounds,nationality and race, religion etc, which means that they are also part of marginalized groups and can face suppression like people of the lgbtq community. But it seems that you used that you cannot be marginalized if your sexuality is straight which is true if we remove everything from a person except their straight sexuality, they therefore cannot be discriminated or marginalized against.
Since the original comment never mentioned systematic discrimination this should only be about individual biases supported by the original post which was their preference which means the following subjects should've been about individual biases. And on your talk about violence one's does have a slight increase when you are of lgbtq origin but that crime would go under hate crime because you are targeted because of said origin where those can be called homophobic. Where in general crime violence being straight or lgbtq doesn't matter you will have that same chance of being targeted, especially if you are female and or look more feminine, your orientation/biology will not stop someone if they have a goal.
Being heterophobic does exist in both phobic definition contexts such as someone non hetero can have extreme fear of hetero people if they are in a hostile environment toward the lgbtq community and or if they are in fear of hate crimes, as well as having dislike and repulsion toward hetero people which is directly linked back to individual bias.
Being or having a phobia does not automatically mean that they are suppressed or a victim of discrimination. Overall the comment was taken and blown way out of proportion and was no mention of systematic discrimination. Heterophobia may not have been the best choice of word because people take it as hetero suppression and believe that it means "straight people can be oppressed too" when in fact is the bias one has when prefering something hetero to not be like the original post.

Overall I do not want to undermine what people of the lgbtq have faced especially both individual and systematic discrimination and marginalization, but I believe that the comment was stretched and words were thrown in that were related to what they meant. I believe hetero distaste, hetero disapproval, or hetero dislike would have been a better choice of words given the context and was not meant to attack the original poster for preferring lgbtq character sexuality over straight ones (probably judging), given that we all came from literally reading the last chapter of this BL incubus webtoon.

And which is why I said in my 3rd reply to you that FruityRice said it in context of not related to real life serious situation. I don't think I need to read your journal/research you put in here if you don't read and understand all my replies to you as I did to you.