This practice of lamps, flowers and plates with candles is against Gurmat.
This practice didn't just get abolished from the Singh Sabha & Gurdwara Reform Movements it was from Satguru Sri Guru Nanak Dev Sahib jee.
At Jagannaath Puri, a famous pilgrimage center of the Hindus, Sri Guru Nanak Sahib jee noticed that the priests were more interested in the rituals and elaborate arrangements rather than in their love for God. So he stepped outside the temple and burst into the following masterpiece. The Aarti
We read it everyday in our Sohila Sahib jee da paath.
Gagan mah thaal, Rav-chand Deepak baney
Taarka mandal Janak Moti
Dhoop maliaanlo Pavan chavaro karey
Sagal Banrai phoolant jyoti
Keertan is the real Aaarti. The practice which is done in the video is from Hindu rituals which has crept in and stayed with some Sikhs. May Guru Sahib bless us with Gurmat Giaan and stay Niaara,
I hope somebody can post the full sakhi from Jagannath Puri regarding Aarti.