I don't want to pick on this person, but imagine if someone said "from a couple of decades of watching movies, I know that all a movie needs is.." Experiencing a medium is very different than developing a medium. And there are a lot of rules that hold true for your subjective experience of a medium that may not be universal rules.
It's even worse because they are using one medium to infer the needs of another medium. It's more like saying "From a couple of decades of reading science fiction books, I know all a science fiction movie needs".
