I was a mechanic in various motorcycle shops in the 70s. One job I did, but hated, was lacing spokes into steel wheels. I still prefer the laced steel wheel look. But that’s for esthetics not performance. By 79 I was working in pharmaceuticals and left the bike world behind.
Towards the end of my term of bike repair, painted engines became the new thing. I also converted many bikes with contact points to electronic ignition.
“Forward Into The Fog”. Oat Willie.
The point is, painted aluminum is neither new nor a known durability issue. Poor execution is the problem, not anything inherent to the idea.