Ishna ji,
Did you read the Text below the video?
In this video, you'll learn how to protect your energy field and personal space from any negative interference, negative vibrations and all psychic attacks that might you might be under. By doing so, you can reestablish harmony and peace into yourself, your life and your private space. You may not be aware of it yet often times when you have certain thoughts and experience certain feelings and emotions, they might not be yours, 99% of the time, they are not... you are just picking up on energy that's around and it is influencing your own functioning and disrupting your own energetic flow. It is important to learn to protect yourself and to strengthen your own energy and your home. The triple mantra is an amazing energetic tool to support this objective, Use it any time you feel like it might be useful, and at least once a week in your home. For more on how to detox body, mind and heart, vi For more on energy enhancement and protection,
More Information:Triple Mantra clears all types of psychic and physical obstacles in one's daily life. It is a sure protector against car, plane and other accidents. It cuts through all opposing vibrations, thoughts, words and actions. Listening to or chanting TRIPLE MANTRA will strengthen your magnetic field and keep negativity away. There are three parts to this mantra. The first part will surround you with a powerful light of protection, the second part will remove obstacles from your spiritual path and the third part will remove all types of obstacles from your daily life.
I don't think that using Gurbani like a magic spell is what Guru ji had in mind.
So yes I think it's a bad thing.