This is what you wrote: "And, for the record, you're the first person I've heard of doing this though I've known two that will straight up pick their noses and eat it like they're kids. So, well, you're not doing that so I suppose it could be worse. "
The way I read this it implies you think picking you nose and eating it on the spot is worse than what the OP is doing.
As long as you wash your hands after it isn't really gross, we are eating ounces of snot a day, it drips back into our mouths. Don't see the big deal.
Also, OP, I think this is a bit excessive of a process. What you are collecting is probably more filler than what originally went up, since the active ingredient is absorbed and leaves the fillers. Sure some actives are probably in that hardened powder that drips down, but its weaker and IME you'd have to save like a weeks worth of it to get a medium dose (as a person who snorts like 6-7 times a day my DOC). Might as well just scrape it out and eat it, the oxy is fine BA-wise orally, so there you go. Theoretically you could get the exact same results as this using a match head sized bump out of every line, and not have to save what drips out of your nose, but rather ingest it on the spot.