and I think that when people try to argue that something is written lazily or lacks substance by saying "it's a romantic story, the plot is just romance" are looking down on well written romance stories in general
yes, the plot may be romance, but that means that said plot is driven by character relationships, developments and interactions: instead of being carried by a specific series of events, the events will need to serve as points of inflection for character dynamics and development
one of my favorite books of all time is probably also one of the best romance books of all time: pride and prejudice (which I think is getting 2 new adaptations this year, austen help us)
the brilliant aspect of a novel like pride and prejudice (and jane austen's skill) is that the narrative of the story is moved by the crossing paths of elizabeth and darcy and the events that unfold in the story all are catalysts for the characters to develop and grow in relation to each other
events and other relationships, like jane and bingley (their separation and then reunion) or lydia and whickham (their elopement and retrieval) serve as points of added development to the main relationship, which is the focus of the story
the marvelous thing is that, even when they are apart from each other, even when they dislike each other, their individual development is connected to the other in a way that fits narratively with the way in which they will eventually fit into one another
they have to meet to learn something about themselves and then grow apart in order to, eventually, be together
it's ultimately a story about character dynamics, about the human essence; in this case, with a romantic narrative
maybe being aro gives me a sort of different perspective on the substance vs the superficial: even if I don't fully relate to all that's happening there with the romance in the superficial events, when the substance of the story is a well cultivated character development and exploration of human dynamics, I can relate to that and appreciate the storytelling regardless
I may not like tomato by itself but I can appreciate a good sauce
so, in my opinion, it isn't that a romantic story which doesn't have another thing going for it other than the romance as a main course (like a fantasy adventure, a horror mystery or a contemporary drama based on true events) is "basic", it's only basic if the writing doesn't account for the fact that, if romance is the core of the story, it needs to be as nurtured, developed and cared for as any other main plot would be
if the writing doesn't account for that and doesn't develop the relationship in ways in which the reader can grasp at it's dynamics (like any other plot, worldbuilding or scenario) but just bullet-points things and calls it a day, saying that it's justified "because it's romance" it's imo looking down on a genre
and that's the case with a lot of the modern romance that is re-purposed fic: if you're going to re-purpose a fic into a romance novel, make sure you remember that, in the fic, a lot of the character building, dynamics and relationships happen off-page because a fic re-uses those things from a canon story
you have to, in fic, cut some corners as not to bore your reader with exposition of things they already know as much as you do, being fans of the same thing; if it's an au, you may have to re-contextualize it, but there is already a pre-existent understanding of the basics that fics require you to present in a less exhaustive way
but when you're writing a story from scratch, bullet-pointing development, dynamics, context, relationships and personality indicators is especially glaring as an issue in romance, where those things should be the cornerstone of the story you're building
romance is a genre about people, at the end of the day, and if your characters feel more like archetypes than people, it's not the fault of the genre