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Your IP address isn’t really a primary fingerprinting method for anybody these days. People and devices are overwhelmingly mobile, and many users will connect via the same IP.

Starbucks snooping is resolved by more ubiquitous technologies like HTTPS, DOH, and encrypted SNI.

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This isn't true in my experience at least for ad tech. Finger printing has moved from a deterministic process, to probabilistic models and IP plays a meaningful role in that. I believe it is why Apple spent the time building Private Relay for instance.

> Your IP address isn’t really a primary fingerprinting method for anybody these days.

It narrows things down immensely, and many IPs will not have many users.

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