The argument is that five days is too short, people still have viral loads after 5 days. That this recommendation is more about getting us peasant workers back to work quicker than about our health.

I mean really, low level employees weren't allowed to call in sick for a single day without a doctor's note, and were often expected to work sick before the pandemic.

But it's not just that letting the plebs take too long to heal fucks up the supply chain, workers can't afford long unpaid quarantines.