It is possible that no matter how much a top hiro is, he cannot out top urka due to the sheer presence of her. She is much larger, quite muscular, and exudes confidence.
Point being, the top perk and its levels dont exactly have to correlate with being able to do anything once it is maxed out.
Should a player with max strength one shot the demon king? since it is the max strength? no not exactly. just because a value is maxed does not necessitate to have a certain outcome of equivalent extreme. It is the limit of the character. I don't exactly see a problem with this outside of a person's personal preference. In that respect, if the devs cared about a simple majority of popular opinion, Im sure this game would not be the femboy/futa niche that it is today. It is also a labor of love. Voicing opinions is cool and all, but demanding something works a certain way of someone else's work is a bit far.