So now the question is why are they deprecating this action? Is it using too much resources spraying an event all over one's scene like shit hitting the fan?
Imagine a near future, a time when Playmaker is fully self-aware of its own contents, where there would exist a Send event action that could allow you to add multiple targets within one action, but could do the work for you by scanning the entire scene, looking for who receives said event, and suggest targets and prefill the list dynamically, and you'd just have to click on targets to validate them manually if you'd want finer control or just add them all automatically, and you could also easily remove them too by clicking on a cross, and the action would even understands that it's reading instances and prefabs, etc.
Just imagine...
The bliss of it...
Life made easy...
WAKE UP!!!!!!!