Did they? Ask your woman friends. I'll bet a _lot_ of them are using fake details. They have genuine threat models that the sort of people who decide "lets just have a piece of paper with everybody's name and phone number at the front door" never have to think about.

It's really unfortunate that much of the spreading of Covid-19 may be people with no symptoms, who believe incorrectly that because they have no symptoms, they don't have it, can't have it, present no risk to anyone and certainly aren't spreading the virus.

A friend tells me they have a friend who insists on hanging out because "I can't have it, I don't have any symptoms".

I don't get why you're being so snarky - it's actually against the rules here.

People are sharing names, email addresses and phone numbers based on assumptions and models of reality developed over many years, e.g. they have experienced zero observable consequences from all previous sharing of this information. Based on their historical observations, it's not illogical to continue sharing.

But policy has changed in 2020. Now the data goes into databases with a physical consequence: temporary blacklisting from work, play, school, travel, even non-essential medical treatment.

This is why people who have already been contact traced (they are already experiencing and learning the consequences) have been reluctant to give the names of their close contacts, because they know personally the consequences that will be imposed on their contacts, facilitated by their disclosure of contact names.

Until people have this first-hand learning experience, it's difficult to put the data in context. Most importantly, being contact traced does not mean they are sick or will get sick from the (possibly symptom-free and false-positive PCR test) contact being traced, yet they and their contacts would be asked to pay an expensive price.