It’s just the type of paper filter that was used. The person in the post used a flat-bottom filter when a No°3 or No°4 cone filter would’ve been better. (As an extra aside, the specific type of pour over device seems to be from Starbucks, and those come with No°3 cone filters to begin with.)
Also, you used a paper filter, you dumb ass
What’s wrong with a paper filter for a pour over?
It filters out the microscopic pasta chunks that you get to chew on if you brew it directly in the cup
mmm delicious 😋
Pretty wasteful, better use a French press
Or espresso
It’s just the type of paper filter that was used. The person in the post used a flat-bottom filter when a No°3 or No°4 cone filter would’ve been better. (As an extra aside, the specific type of pour over device seems to be from Starbucks, and those come with No°3 cone filters to begin with.)
That could be a malita filter, which has a flat bottom.