In my honest opinion, the female/male novels are inherently different from the beginning. Like, every author (that I at least know off) started writing as a hobby. But only some managed to sit through the period where they were trash, learning how to get better. Only then the truly good authors are born. It's not like talent can solve everything when it comes to writing with how writing, in reality, is a daily toil. That gives us a current situation:
- Author starts from a hobby, learning from the novels he/she read along the way and adapting their style a bit even if that's not the intention.
- Author fails the first few times, learns on his mistakes, writes more and more, watches lectures about the theorem of writing, and generally, gets better
- After countless fails and constant hard work over a long period of time, one finally manages to reach the level when the basic mistakes no longer apply to him, while his plots are interesting and original.
The problem is, most of the novels on webnovel, especially orignals (with all the due respect to the great original novels that there are plenty off) are made by the first category of authors. People that still belongs to the first stage that I mentioned above. That puts us in a situation where:
Male authors are mostly focused on Epics. Thats the general idea, steeming both from how masculine brain works, what do readers expect and generally the overall aims are similar to what one would like to achieve in his own dreams. That's why we have Hero's journey, Cultivation novels, Harem novels. Some might have better craft or ideas, but generally - it's all the same. Only once someone progresses along the way, would his plots turn diverse, his systems unexpected, their points flawless. But you are not seeing those novels. Outside of the selected few, most of what you are reading has the tough nut to crack to overcoming the burden of extremely explored genres, where everything has already been written to a huge extend.
On the other hand, you have female authors in the same situation. Learning to read from the novels they read in the past, overusing the same schemes... But there is a huge difference between how man's and female's brain works (No gender propaganda here, just the general consensus). Men are more inclined to think about facts, logic, reason. If they see the problem, they wish to solve it. On the other hand, women are more focused on the feelings - something that allows to make the novel very intimate, allowing the readers to immerse in it even if the truth about the plot is subpar.
It's because (in my honest opinion) this difference, that is the reason behind the point that OP mentioned. I would say those female novels have a way lower point of entry to get recognised, but there is a relative ceiling how far MOST (not all) of them would come. On the other hand, if an ml novel sticks around for long enough, its author has a huge chance of finding his own niche, in which he will produce something that will entice the readers just with the insane plot and craft.
It's not that female or male-oriented novels or any better or any worse. Its that they are different, and have inherently different market demands and tasks to fulfil.