"The Hawthorne effect is a type of behavioral reactivity in which individuals modify an aspect of their behavior in response to their awareness of being observed."

Off the shelf and with all the kyc/aml and chainalysis, pretty much everything in bitcoin is observed, unless you put in a lot of effort.

Zooming out a bit, the same could be said of most things that touch the internet. VPNs and proxies help, but you still get fingerprinted unless you are a paranoid bastard willing to put in a lot of work.