Wings evolve from legs though, generally speaking. This means that a four legged dragon with wings would have conceivably evolved from a six legged creature. You can get hand-wings or arm-wings, and we’re not entirely sure but think insect wings may have also evolved from legs or some other kind of similar structure.
But pretty much you can either have wings or legs/arms. You have to trade them in. That’s why the whole angel/demon thing doesn’t work either. The traditional harpies work but they’d be furry and not feathered. I haven’t worked out the wingspan for them but you could probably come up with a reasonable guess. They’d be more bat-people than bird-people, and I suspect that their chest areas would be less generously proportioned than is typically seen in the artwork. I’m not going more into the physics of that one though.
I only see this argument made by conservatives. It is a deliberate attempt to drive a racist and LGBT-phobic wedge between the white working class and the Democratic Party. I have never seen a progressive person demand less support for the rights of minorities.
I also favor raising the minimum wage, making universities free to attend, and having universal healthcare - but LGBT rights aren’t the reason we don’t have those things. The GOP is the reason we don’t have those things, and it’s not like if the Dems said “Fuck it, arrest and kill the gays” that the GOP would suddenly support workers’ rights.
If you want to help the poor, vote out the party that says shit like this.