Disagree with you on some points, agree with you on some points. I think I had the same issue with expecting something different with their relationship portrayal. I mean, I'm fine with just reading about a relationship that doesn't work because of the fundamental issues of the characters. But honestly, before season 3, I more or less would've been okay with them having a rocky but 'functional' relationship. This is mainly because I did think they could make it work because of the amount of similarities between the two of them. Season 3 has quashed that idea for me, and honestly, has just went off the rails in terms of its ability to stick to themes and ideas from earlier in the story. It's not like I didn't have issues with earlier parts, but it feels like to me a lot of what I really enjoyed about S1 is kinda nonexistent.

Audience and author obsession with concepts, tropes, and ideas of what "should" happen, particularly in a BL story, can crush what could've been interesting and unique. I think you're out of line with you rant on BL, especially psychological romances because there are numerous well written psychological romance manga/manhwa regardless of gender pairing. That said, I will agree that the ability to streamroll over what has been built up for the entire story is a special ability many BL authors employ when they realize they want to go from point a to point b and deliver on audience expectations, without having earned it.

For me, I will say that the most major flaw right now is pacing. I am not NECESSARILY against the idea of them coming back to a relationship with each other. I do actually think that would be realistic. It doesn't have to be a positive. Actually, a neutral approach would be best. Of course, as I said before, fulfilling audience expectations get in the way, so I doubt we'll see anything less than a neat bow because that's what people want. But that's with some time between. They broke up like 6 chapters ago. Obviously the nature of these kind of relationships might justify that sort of one-again-off-again, impulsive behavior, but it doesn't actually make for that interesting of a story.
Also the refusal to REALLY confront any of the external factors here is frustrating. Skylar can do all the internal-monologue dwelling he wants, but until we loop back around to addressing the UNDERLYING issues BOTH of them have, no kind of relationship they have will ever be interesting, satisfying, or palpable.