???
There's a long history of slipping adult-oriented jokes into children's cartoons. The DCAU practically made an artform of it.
Sure, there's overt rules against some of that stuff, but showrunners tend to be pretty canny at skirting the rules.
Adult jokes, yes, but the point here is that the "adult joke" was considered offensive, by an adult. Personally, as an adult, I found the reference to be rather overt, at the least, regardless of how offensive it was, or was not.
I think, in a more broader look at the issue, it could be said that even amongst adult jokes/Easter eggs in children's media, there could be arguably certain lines that are not crossed. With Casey Kasem, it was "Carbomya", to which I agree with. However, I'm not sure, at the time, if there was a broader issue. It doesn't officially seem to be now with this reference, right? I assume the reference is still there in the recent upload?
By contrast, the link below is also interesting, as it touches upon some issues (some) people had with the "Masters of the Universe" toyline (and arguably, by extension, with the cartoons), but this time from a more western/"Christian" context (rather than a middle-eastern/Muslim one) :
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I've posted this here, not to necessarily cement my opinions or position, but simply to add to the discussion about "morality in 80's cartoons". I suppose another issue could be if whether more debate was generated, at the time, concerning "WASP" issues like the video above, or how xenophobic/ethnocentric depictions of middle-easterners was?