The decision to buy it is done after going through the book and see if I like how the author writes, how the example code is, and especially how it covers my specific topic, before buying it
You're basically saying you'd walk in to a restaurant, have a bite of every dish and then maybe decide to pay for it.
I do this for about 3-5 books, and decide on which one to buy.
Now you walk into three restaurants, eat a bit at every one of them and then decide to pay for the one you liked the most.
I agree with the original article and I think there are times where piracy is valid, but let's not think that a valid solution is to pay for what we think we should pay and nothing else.