This point is valid - to a point. There is a difference - a huge difference! - between snorting
/insufflation and using nasal snuff.
The material is mostly dry, finely but not too finely ground, and then the material is lightly breathed into the inside of the nose. You do not bring it into your sinus cavities. That can cause significant injury and will hurt a lot. It also won't get you off.
This ROA works quite well for tobacco
because you don't need to ingest 20g of tobacco to get a decent experience. And likewise, you don't have to absorb all of the nicotine
in the tobacco to call it an efficient use, whereas you would have to absorb most of the mitragynines in order to not waste it all. I can't imagine someone taking the wet, rpost-use nasally administered kratom
and then eating it to get the other 1/2 or 2/3rds of the psychoactives. All-around it sounds wasteful.
What you *could* do is make a resin extract or a whole alkaloid
extract, powder it, and then snort it. That would work well, get you what you want, and be like the normal practice of snorting, not like 'smelling' or lightly 'sniffing' after the fashion of tobacco snuff.