Here's actual research on long Covid:

https://www.nihr.ac.uk/news/nihr-publishes-second-themed-rev...

> For those admitted to hospital, between 50-89% had at least one enduring symptom after two months. 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;

> Long Covid appears to be more prevalent in women and in young people (including children) than might have been expected from acute Covid19 mortality;

That's not "very low" and you shouldn't insert your own conclusions on unnamed resources.