These aren’t pointless drawn out conflicts. There’s absolutely merit into fleshing out the real implications of the aspects of their characters, environment, and situations that affect them and their relationship. I personally really appreciate the story actually developing these two as individuals and then, ultimately, as a couple. I think realistically these ‘conflicts’ would naturally arise because of their personalities and past trauma.
This is so far from over, how can you even think that? They've barely been together, they are still laying the groundwork for a future together. This is important for Garam considering his past. He needs to see his boyfriend stand up against his parents, and he also needs to stand his ground for Jaehyuk. Ending it here would have left so much unanswered and their relationship underdeveloped.

Why do authors insist on conflict after conflict after conflict. Like dead ass you already 30-40 chapter of miscommunication, another 20 chapter chase arc. Wrap the story up and let them go on. Youve already collapsed them so much they no longer interact with the outside world anymore. It because the story has ENDED. You brought them full circle, this pointless arc and Garam's continous self esteem issues are cool in the beginning, but what have we been working towards?