That immediate sounds like a good point, but if you think about it some more, it's not entirely true; quarantine is for people who have been exposed to some contagion... You don't put them in quarantine because they are sick but because they're likely sick, and you keep them there until it's they were not infected, after all.

The problem with The State's illegitimate use of this now with 'coronavirus', is not that quarantine is about keeping likely infected people sequestered but that the entire notion of the alleged infection is to begin with, by any reasonable thinking, fabricated, made-up, bullshit... If you make up a fantasy emperor's-new-clothes 'condition' that only you can detect..., then obviously you can, presuming your own claim about this alleged condition, quarantine everyone, indefinitely, and there is no way for them to ever be proven healthy... Remember, having no symptoms is not a sign of not having 'coronavirus'. 😀 It's theater, word magic, wizardry.