Why can't the oil lamp be replaced by zero watt bulb?

The Science behind Ancient Indian Culture, Traditions

Please see atleast the 50 seconds of the following video -

If you don't trust this person, visit - https://youtube.com/playlist?list=PLuYBJEEDL569zDffN8qufG-ichPKJWAOC, else watch the next video.

References:

1. https://isha.sadhguru.org/in/en/wisdom/article/this-holiday-season-bring-an-oil-lamp-into-your-home
2. https://mdaily.bhaskar.com/news/JM-RIT-lighting-diya-science-reason-5578734-PHO.html?seq=0