I been online since 2000 or 2001. Almost all the art was straight. Back then. It was a lot of furries with human dicks, often having human like pubic fur.
Lola bunny porn, renamon porn, sonic porn, tiny toons porn drawn in mspaint, pokemon porn with a lot of misty in it, digimon, etc.
We had digimon lemons by red rover. And people would try to claim that Patamon was a female, so they weren't gay for wanting to fuck it. They claimed it changed gender on evolving to angemon.
one of the few gay art furry artists was foxxxfire or however many xxxxes they had.
Like gay stuff was rare (Though lesbian stuff was pretty common), and no one gave a fuck about a character's age. If your dick got hard to it, you jacked off.