If the plugin is warning have not been removed I presume its because it still can cause some problems and maybe conflicts with other plugins so it is wise to follow the advice of not installing until it gets fixed.
Most of the issues regarding plugins comes when modifying a global variable and not putting your code under unique module so that no other plugins gets affected. I am sure there is more reason though so if you are unsure of a plugin maybe ask in the developers forum if its safe.
Also 'SketchUcation plugin store' is great place to find safe and up to date plugin and a very cool feature is to unload plugins you are not using and load them up when you do. Here is a link to that plugin.... http://sketchucation.com/resources/plugin-store-download
Cheers!