Feedback - Reward chests (and luck?)

I was just wondering, are the loot table for OPR, Portal and Gypsum chests completely broken? I’ve opened probably 400+ combined chests of these, and seen 1 legendary. Maybe 30 purples, the rest is just trash (well so were the purples and the legendary thanks to the extreme RNG of stats/perks).

But surely, on 400+ chests, there shouldn’t be 90% green trash?
I was wondering if it helps having luck gear when doing the activity and/or when opening these chests? I tried both but I noticed no difference.

So, please, at least make our grinding work slightly more rewarding. Please.