There is a false dichotomy in our society that unless you are staid in your presentation what you are saying can not be true. That doesn't actually follow in reason if you think about it: it's possible to be rationally pissed. For example if someone really is copying you and getting away with it.
If you look past the presentation and objectively evaluate the statements being made you will see it is pretty much true what he said.
It's kind of hard to objectively evaluate an article written by DED when he has clearly over the years established himself as having a very strong Apple bias. His articles usually have some really good info to consider, but you have to read it with a healthy bit of skepticism considering his very non-objective view of all things Apple.
This particular article is so ridiculous (not entirely untrue, but just plain ridiculous) that I thought perhaps it was meant to be published on April 1st.