Was duping fixed?

Something seems off about that.

Protection scroll should have inflated since as opposed to gm scrolls, mass amounts are used with 20s/aee/ees in perfecting weapons
along with other scrolls.

If it was patched then most of the dupers would have kept their scrolls, buy out those who still think duping is available, and wait for inflation.

Instead you have smegas with people trying to sell their protection scrolls at prices lower than the competition.

Keep in mind that Scania is one of the most populated worlds.
I don't know exactly how many "bank mules" those that dupe have, but I'm sure it's quite a bit, and on different accounts.
That being said, there could easily still be billions of duped white scrolls not released into public circulation yet.