I don't think they're bad, either. One of the reasons it was advised to stay away from 'cones was that if you're not doing anything but co-washing, you're going to eventually have buildup. And if you're doing hard-core CG, that means no shampoo at all, so 'cones would be a bad idea. Anyone who uses shampoo, even low-poo, can probably use 'cones with no problem. One of my favorite conditioners right now has 'cones in it, but I use shampoo so I don't worry about it. My hair is fine.
2C/3A, fine, higher porosity.