Do I need a research supplement to get into Columbia?

It says that it is optional on their website, but out of the 7 people that I know that got into Columbia, every single one of them submitted a supplemental research.
Does anyone know of anyone who go in without research? How important is it?
I’m using my ED on Columbia and I do not have any research supplements so I’m worried that could ruin my chances.

No. You do not need a research supplement. Most people who get accepted have no supplement.

is it good to have a research supplement? how beneficial is it?