What's your definition of quarantine? You're only quarantined if you are positive for Covid-19 or if you're a suspected case, then it's 14 days quarantine and eventually two tests before you are allowed to go out again (at least in my country).
Besides that people are asked to stay at home and only go out for necessary things like groceries or doc's appointment etc.
What you're describing is the arrogance of ignorance of (young(er)) people and who don't understand the seriousness of the situation and that they are the primary disease vector because they are socially more active than older/elder people.
In theory you can go out for a walk or whatever as long as you do it alone or only with the people you live at home and keep a distance to other people.
(For this to be my first post in this forum... lol)
