It's not even exaggerating that content produced about ME/CFS and Long Covid by people with no medical knowledge, here a kids' TV show, is generally better than what experts produce. This is a choice. A choice no reasonable, competent person would make, and yet here we are.
Short #MECFS explainer for children from German TV. Includes an explanation of post-exertional malaise (PEM), the worsening of symptoms after activity. Note: People can recover. Older studies suggest around 5–10% of adults make a full recovery.