I mean, there's two male led martial arts series I can think of (Into the Badlands and Wu Assassins) and no female led ones other than this I can think of. Maybe the source material here makes it a target, but it doesn't seem to me like Asian women are headlining shows like crazy.
There's probably some truth in it that it's the source material here that raises certain issues. If it had been any other series - eg an original one - then it probably wouldn't have had the same objections.
Kung Fu was something originally conceived of by Bruce Lee, and then he was bypassed as the lead for simply being Chinese while the studios wanted a Caucasian in "yellowface" instead because they didn't think audiences would accept an actual Asian male lead.
Now with the chance to be true to that original vision, they still seem to not want to go into that territory again but prefer to make it more palatable with an Asian female instead, while still supposedly appeasing the Asian demographic.
There have been shows like Nikkita with a female Asian lead.
And when they do it's not always necessarily sexualized. Like, maybe I'm missing something, but it doesn't seem to me like Nora From Queens is meant to be sexy.
I'm not saying that all Asian female characters or leads are sexualised. I was using the term someone else used above of being "fetishised" and piggy-backing off that. What others generally mean by "fetishised" in that context is that they're seen as someone desirable and almost exotic. For other races, they might sometimes think "hey, it would be cool to have an Asian girlfriend". But the same isn't usually thought of Asian males.
But what I mean personally in this context is that Asian females are regarded more highly as people who are considered in the same vein as white or black people who can be (but not necessarily always are) seen as attractive or desirable to people at large.
Asian males, on the other hand, are largely desexualised and are seen as less of a person, or not even as an eligible option. They're largely consigned to roles like the nerdy tech guy or the cold and brutal martial artist, and not someone who is really all that human, relatable or approachable.