i don't think how dirk acts towards jake in the epilogues is out of character or "out of nowhere" and the reason we don't get 'insight' on what went wrong with dirkjake is 1) dirk choosing not to tell the audience about it as a narrator and 2) it's pretty self explanatory if you're able to piece the very obvious pieces together lmao they had an on and off relationship for 7 years that collapsed after jake's lack of commitment and dirk simply had bigger fish to fry, he's obviously extremely resentful about it. the final scene of them is dirk hurting him in a cathartic way like very clearly and personally? i wouldn't have wanted an in depth explanation and exposure on their godawful relationship bc it would've been redundant LOL we see why they don't work in homestuck proper n we know they gave it a shot (or several) afterwards, what else is there to show? i still fail to see how it's homophobic writing
too many people answered n i can't give specific responses but here's a rundown: johnroxy is also meta commentary on how unfulfilling a heterosexual marriage is because theyre both forcing themselves into the role of Man and Woman that they DO NOT WANT given that they're both transgender. rosemary's issues aren't "dirk inflicted" and trying to reduce it to dirk the big meanie broke them up :"( feels frankly a bit misogynistic, i could go on about how rose and dirk have an extremely similar viewpoint on what's Necessary to the point of sacrificing other people and themselves to achieve it which is why dirk was able to feed into it and convince her to leave-- and even without his influence we see that rose cheats on kanaya and agrees to have yiffy because it would've been cosmically important or whatever, it is a mentality that she has independently from him. but on the topic of dirk and rose it is a codependent relationship that can't be reduced to "gay man grooms a lesbian" (??) it's both of them isolated from everyone else and they only have eachother left n i'm not downplaying dirk's abuse in this situation but it is completely in line with their characters it doesn't feel out of nowhere to me.
and about everything else, masculinity has ALWAYS been equated to abusive power in homestuck and gay men are not an exception? and i think the issue you're having is that you're reducing dirk to his gayness instead of seeing him as a character who is part of a bigger story. our introduction to dirk was as an extremely abusive older brother and you could argue that bro "isn't really" dirk but he is, you could argue that AR's pushiness towards jake means nothing and is independent of what dirk wants but he is also dirk and acts based on what dirk wants without the inhibition (or responsibility) of having to deal with it because he's 'not real'. dirk is an extremely fleshed out character in a way a lot of gay characters in general aren't i really still fail to see how it's bigoted that the epilogues chose to build upon and expand on the less digestible parts of his character that have been there since the beginning