>>507493>Basic texture skills forever gone>Model painting dependency is now
"New technology is bad! The old way worked before, why not keep using it!".
You sound like those old sculptors in the industry who hate computers for making sculpting faster because they refuse to learn it.
It doesn't matter what you're doing, being able to paint on the model is faster and more accurate, since you can see precisely where your stroke is going to end up on the mesh, instead of some vague judgement from looking at the UVs. Not to mention when your stroke is projected to texture, it is warped to take into account the inevitable distortion in your UV islands, something you can't take into account by manually painting on the 2D texture.
It's about achieving higher quality. On the model painting tools is part of what allowed a leap in CG quality. This isn't the PSX era where you can get away with painting on the texture map because your texture res is like 256x256 at best. We're not reliant, simply being smart.