I think this is fine as long a those who decide to risk their life do not put others at risk without their consent, and there are equivalent remote or socially distanced alternatives for all activities.

For example, anyone who decides they want to risk infection should have to register with the government and they will be provided with an arm band that must be on display in public areas so other citizens can avoid them. Private premises will have the legal right to deny access to anyone with the arm band.

It might be a fun experiment in natural selection taking is course. All the "callous" types can go to FOSDEM and and see how bad of an infection of COVID-19 they -- or their relatives -- will get, and if they are part of the 0.3% (if that is accurate).