SourceTree is a posterchild for Daniel Kahneman and Amos Tversky’s systems thinking popularized in Thinking, Fast and Slow.
By making things cumbersome and non-intuitive, we can switch from the automatic part of our brain (system 1) to the analytical part (system 2) which allows us to work slower.
SourceTree facilitates this by making a major revision of the user interface with every fricking minor update.
No, I’m not annoyed by the version that just got installed, why would you think that?