I agree with some of his stuff, e.g. he was the one who convinced me how important tests are.
Also the blog author is exaggerating in lots of places e.g.: "Safer Languages: The ‘Dark Path’." In the linked article he says "It’s not the fact that Swift and Kotlin are statically typed that has me concerned. Rather, it is the depth of that static typing." (I myself don't agree with Uncle Bob, I think nullable types are an awesome thing)