That's probably it. Watching the show you see a masculine black man who's righteous and principled, ppl are drawn to like the character based on those traits alone which kinda ends up relegating his sexuality to a mere footnote. If u into the show and plan on watching til the end ur gonna be forced to take Omar's experience into account.
On the other hand, In real life anyone could just fall back and ignore a person who their prejudices might make them feel uncomfortable around. communication's severed so we don't got a chance to learn from one another.
Plus, I think there's many well meaning straight men who feel a bit uncomfortable around ultra feminine/queen type of gay ppl and culture. That blurring of gender roles stands in stark contrast against how straight men are raised and what we're taught to expect out of a mans character. Personally I find it kinda funny, not in a mean way, just that the media plays that side up a lot to the point of charicature.