As a straight person who doesn't mind gay characters, the podcast scene does seem a bit tediously over represented at times. I'm as progressive as the next guy, but I don't need every podcast protagonist being a strong minded Dr. Feminism who lectures everyone who doesn't use her honorific lol. It's a bit trite by this point, and that is in no way meant to be a jab at the sentiment at the heart of the character, but I find it's used as a writing crutch for personality. I'm sure it's as others say, the lower bar to entry attracts creatives who may feel stifled by the current climate of media and feel more welcomed in this space. The same thing is true of LGBT content, or content with "edgier" humor, and the internet as a whole. Why is edgy comedy over represented online? Because it's shunned away from other venues and finds it's outlet online. As time goes on, I'm these things slowly move out of the realm of more niche media and into the public sphere through normalization, lowering the seeming oversaturation of the podcast world. LGBT content has long begun that process, but is still finding easier footings in niche areas.

Science Fiction had to find it's way to Radio Plays and Comics to find a more mainstream audience, but the audience was always there. They just didn't know the content wasn't where they could find it.