Just because he has baby momma issues doesn't make him a racist stereotype IMHO. Not substantial.
It absolutely is a stereotype, so it is substantial.
Just because you depict a black man as a criminal or gangster doesn't necessarily mean it's a racist stereotype.
By that same logic, presenting an Asian as an evil wizard doesn't necessarily mean it's a racist stereotype.
The reason they can't have Master Khan as this Asian sorcerer is because there is a negative connotation to such characters. Yellow Peril characters were these mysterious Asians who sort of perpetuated xenophobic attitudes.
And depictions of black criminals perpetuate ideas and attitudes of black men being criminals and thugs. There's a negative connotation there too. Didn't stop them from bringing Turk Barret or Cornell Cottonmouth or Shades to Netflix.
And let's go along with your line of reasoning. Turk Barret in the Daredevil show (as opposed to that tie-in comic) as a criminal or gangster doesn't necessarily mean he's a racist stereotype. You know why no one had outrage over that? Because in the show, Turk wasn't written in a stereotypical manner. So what's stopping Master Khan from getting that same treatment? What's stopping Master Khan from being an evil sorcerer who happens to be Asian ala Turk who is a criminal who happens to be black?
Having Turk as a gangster and gun runner is actually believable and realistic. This was a character who was basically a yellow peril villain when he debuted in 1960 in Strange Tales. It's not quite the same thing.
What's unbelievable about having an sorcerer from K'un-L'un (a city primarily comprised of Asians) be Asian?
And yes, it's exactly the same thing. But you pick and choose what suits your narrative as opposed to seeing that you're being hypocritical. You'll say things like showcasing a black male who is a criminal and has multiple baby mommas isn't racist, yet go onto say the Ancient One is a racist stereotype.
And if not Turk, why not Luke Cage, who I constantly keep bringing up and parallels Master Khan?
Like Master Khan who you say is a yellow peril villain of the 60s, Luke Cage is pretty much comprised of blaxploitation stereotypes from the 70s. He was a jive-talking, angry black man. However, as I've stated many times before, they simply wrote him better while still keeping his origins true, and now he's a well-rounded, three-dimensional character. They are still going to have him be framed for a crime he didn't commit. They are still going to have him be an escaped convict who got experimented on in prison. He will be an urban black male who listens to hip hop and rap music as they've mentioned before in interviews. However, he will be a fully developed character with many dimensions.
Again, these tropes are everywhere. It's about how you write and present the characters that keep them from being racist.