I’m going to provide the counter opinion here: I prefer CSD. SSD gives you a consistent title bar across applications, but it can cause a wildly inconsistent look within a single app. Part of the application is being themed by a different piece of software that doesn’t know anything about it.
I also like apps being able to make use of some of the extra space in the titlebar if they want to.
I’m a user. Why do you assume I’m a dev?