[pygy]

It makes sense for the author to use it, since he wants to emulate the behaviour of the "Recent Applications", etc. Dock folders. A bounce is unwelcome in this case, and the other benefits of the normal application startup (like being registered in the "Recent Apps" list) are useless for him.

[tumult]

It does make sense in his case. It's still a hack, and he's still ignoring his own advice :)