Yeah I know we say this all the time and it should be obvious, but knowing how to do something doesn’t mean you can teach others how to do the same. Most people are absolute rubbish at teaching others the things they know, that’s why we have schools and that’s why we have teachers that were trained for this purpose.
Nowadays it feels like it is all a big scam with everyone teaching people the things they know, it’s infuriating. It’s even worse when the person teaching doesn’t even have the skills themselves (Carrie and John for example) so they should first take some classes.