Key phrase, since we're talking about long Covid:

> Of those not admitted to hospital, 20-30% experience at least one enduring symptom around one month later and at least 10% three months later;

Still, not "very low"...

A friend of mine never went to a hospital. It's been four months, and he still can't smell anything. He's 25.

People who haven't been hospitalized aren't likely to end up in these statistics, regardless of whether they have long-term problems or not. It's harder to study them.