By similar logic, sats in cold storage are an attack on Bitcoin liquidity. Lets try to do better.

Disagree. If we extrapolate and imagine all sats have something "unique" about them what's the value then? Most people will never even know this "rare sats" exists. Of those who do, most people will never run and ordinals software to look at this. I don't think we need to worry about it.

Perhaps a perceived attack on sat fungibility. But it’s not, even if that’s their intention. Bitcoin is money, 1 sat = 1 sat, 1 sat / 2.1e15 sats, and that’s all it needs to be.

What is a rare sats?