Eido's garden is terrible.
Yes, you CAN get the purple rarity stuff... But most of the time I get two or three green materials, and today I just got all greens.
WHY are these in the pool? The first act alone gave us an easy way to get green materials just by playing. And on top of that, you get materials from dismantling revenant weapons, usually green but sometimes blues too. As if we didn't already know they don't playtest their stuff enough(Not having a QA team kinda does that)...
If it was every six hours or so, sure, I could see that being fair. But this is a once a day thing you can collect, with a good chance of it being materials you likely already have a lot of. This late into the episode, that's not very good.