Personal 4th reason: My mind keeps going back to this when I think I want to try Emacs again > [Every dynamic module] should also export a symbol named plugin_

Personal 4th reason: My mind keeps going back to this when I think I want to try Emacs again > [Every dynamic module] should also export a symbol named plugin_is_GPL_compatible to indicate that its code is released under the GPL or compatible license; Emacs will signal an error if your program tries to load modules that don't export such a symbol. The viral nature of the GPL already bothers me. Emacs trying to enforce that I'm only running GPL compatible code is even worse.