it is smoke, not vapor or reclaim from oil. you're not losing much, i understand your thinking but when you dab with multiple attachments, you're definitely losing thc but i don't agree that it is the same here.

flash vaporization isn't occuring where you boil a solid into a liquid and a gas and inhaling it though decarboloxylation from thca to thc. that vapor is super sticky and will condense to whatever is cool. there is nothing to be lost.

i do not agree that you lose thc or terps thought that filter since it's hollow. what you get is a longer duration for the smoke to cool before it hits your lips. if you don't believe me roll up your next joint with half of the size of a filter and tell me that shit ain't harsh as hell / hotter of a smoke, you can literally feel the combustion as it hits your lips and it's not as enjoyable of a smoke