I completely agree with your points and they also relate with me a bit, Zettelkasten systems don't work for me at all, nor do TODO lists, it depends on the type

I completely agree with your points and they also relate with me a bit, Zettelkasten systems don't work for me at all, nor do TODO lists, it depends on the type of person, it doesn't work for everyone; I think what the author is trying to say is that Zettelkasten or other knowledge-based linking systems shouldn't be advertised to everyone as a "way to organise your thoughts", mainly because of the fact that it depends on the type of person, like an example is that as you mentioned, it works amazingly for you, but for me it doesn't really make sense with how I do things, I think that is what the author is trying to say.