Very rare and near nonexistant are two completely different things.
I have max possible number of chests (9) and haven’t seen a single glyph nor relic since the patch, not even the very low rarity one needed to make uncommons reach rare.
Number of glyphs for a max anything was also increased from 4 to 14 to get a legend to max mythic, yet their price in shop is nearly the exact same and drop at a rate of 0.001% or something seemingly similar.