I think leaning heels look awful and dangerous. I expect an ankle injury at any moment. When my heels start to lean, I check the tip. If the heel tip is not worn, then the shoe is faulty and needs to be disposed of and replaced.
Seeing others with leaning heels I ponder about the reason - either he/she has never spent time learning to walk correctly or the heel tip is badly worn and needs replacing.
Walking in high heels can be challenging and many never manage to get above a medium 3 inch heel. I always admire those girls and boys who can walk correctly without leaning in heels of 4 inches (10cms) or higher, and walk with confidence, looking superb