To be honest, I think this is one of the series that deserves "Parody" tag.
Because it so obviously is parodying the typical misunderstanding-romance tropes at every step, and pushing them to the breaking point and past it. There's no way to take this at face value, and you shouldn't try.
Unfortunately the way the manga is executed doesn't work too well with that premise. Suspension of disbelief is stronger or weaker the more distorted the world of a story becomes. In a proper comedy that is patently absurd on purpose in all its facets it is easy to suspend one's disbelief, because we are not meant to perceive these interactions as realistic or sound. You can watch slapstick comedy and never once fear for the character's well-being, because it is all enjoyably fake.
Meanwhile this manga has tonal issues. Ayaka appears to be from a romantic drama, while Hiroko stepped straight out of a romantic comedy. You can't laugh at the absurdity when you genuinely feel the heartbreak and pain of Ayaka not getting through to the cartoon character that is Hiroko.
This dissonance is most likely why many have negative reactions now. I have read plenty of works with slowburn romance, misunderstanding based drama or even a seemingly unbreakable status quo. But people are more forgiving of those when there is a coherence to the emotions and plot. The misunderstanding must be something that can be misunderstood by a human being (even if it could be solved simply by talking once as usual). The love interests usually do not confess directly out of some personal circumstance. Ayaka left not room for interpretation. The only move she could still pull is to outright kiss Hiroko, but even then author will find an excuse.
It's just suffering for suffering's sake.