I said the attraction to Satou is explicit; the general nature of her sexuality is what's implicit, even though every note of a coming out story is being hit. This is a story about a woman realizing she's gay where the concept of "gay" never comes up. It's like the author wants us to totally understand what these "holes" are (internalized homophobia and unhappiness about forcing herself into hetero normalcy) but wants to be coy about it or not explicitly bring it up for some other reason. This appears to be fairly common in yuri manga.
I think that's just incongruent with the story the author wants to tell. It's a story about accepting herself, and acknowledging her sexuality is undeniably part of that, but it's also a love story. I think the author wanted to show Hinako, the girl who (thinks she) can't fall in love, completely falling head over heels for someone without even realizing it. Introducing concepts like comphet and general sexual attraction would result in the "girl who (thinks she) can't fall in love" aspect disappearing. Which would be fine - but I don't think it's a flaw of the author that she decided not to take this route.
In real life, I think a lot of times these issues about her sexuality are solved by spending some time reading about it, or talking with an online friend, or something similarly mundane. But that wouldn't make for as great a story, at least in my eyes.
But Hinako being gay is central to all of that. She's like, "Oh no I'm not normal and I'm not happy being like most women and I can't fall in love!" and, like... literally all of that is because she's gay. Sure, she could plausibly have self-esteem stuff built up all around that, but the gayness is the root cause.
It's like if I wrote a story where a man is sexually abused as a child, and as a result, when grown-up, he is scared of intimacy. And then I never explicitly bring up the abuse (instead just suggesting it) and justify it by saying, "Oh, this isn't about abuse, it's about fear of intimacy." Except, like, it's not... it's about fear of intimacy from a history of abuse, which is different from other kinds. Or, I write about a kid who doesn't fit in because she's deaf, and no one in the story ever says the word "deaf." Even if it's not the focus of the story, we all know it's relevant; it's weird not to acknowledge it somehow.
What concerns me is, like, making the gayness subtextual instead of something talked about directly has some practical benefit for this story being sold or to readers embracing it. Like, "you can tell your yuri story, but only as long as none of that gay stuff is part of the deal: for all readers know, this coworker is just a weird exception to her straightness."
I think Hinako's neurodivergence (I read it as autism, being autistic, mixed with some anxiety and depression, some other people might read it as just depression, or as something else, there's many valid readings) is much more central to the ways she feels isolated from the people around her and the ways she has trouble connecting with them. Maybe that's not how you read it, but my point is reading it as her being disconnected from everyone around her, dissatisfied with her life in general, and having trouble handling the everyday tasks that everyone else supposedly can as due to being gay is not the only valid interpretation. It's certainly a factor, but I don't think it's the main one.