color sanding single stage

A large part of the problem is in todays auto paints. They have so much additive, UV protectant, flex agents, along with the bonding agents. Do this, Walk every new car lot in your town and try to find a factory paint that doesn't have some orange peel.
I think it was the TV show called Motor Week that determined Toyota has the slickest paint.
These factors and the EPA wanting all mfgrs to switch to water bourn paints is why the textured flat paints are becoming more common. Most of us will never learn to love that finish but the next generation will / already is.