There seems to be a trend among certain groups of developers to act as if their preferred environment is the only one that exists. Calling this "The Programmer's Notebook" makes it seem like a broadly applicable tool for programmers in general, when it's actually fairly exclusive and specific. There's nothing particularly egregious about this example, but it's part of a larger pattern that is aggravating for any non-kool-aid drinkers.
Edit: to be clear, this isn't specifically about Apple's kool-aid, either. I have the same reaction when people assume every developer is or should be active on GitHub and other similar monocultures.
Edit: to be clear, this isn't specifically about Apple's kool-aid, either. I have the same reaction when people assume every developer is or should be active on GitHub and other similar monocultures.