Also, Knime and similar apps show a workflow way easier to understand at first sight. Specially for people with low programming skills.
Not to mention that you don't have to care about the environment and quirks of the packages and so on, although I recognize this is not really a problem in R, but I had with Python from my noob perspective of programming.
I do pretty complicated stuff with Knime, PostgreSQL and Apache Nifi. I make workflows almost on the fly, snap many operations to them, etc. I'd love to see this guys doing something similar in the same timeframe I do.
Well made GUIs like Knime has, make your life easier, this kind of articles sound a bit snob tbh. This statements are true for developing websites and many other fields, not really for treating data. It doesn't make much difference given the current tools.
Edit: I see people arguing Excel is fantastic. It's true, it's amazing but it doesn't keep track of what you do with the data. It's difficult to understand what's going on if there's something even a bit complicated, not to mention if people just copies and pastes stuff everywhere, which is common.
Sorry for my poor english.