RNG is the real endgame.

Took me like 1,000 fates to get all of my Alexandrite, which I'm doing because my Dreadwyrm stick refuses to drop.

The claim that relics are for casuals is uneducated and is only made by people who haven't done both, or who got faceroll lucky with their drops. I'd say that relics are as big, if not more of a grind than getting that Dreadwyrm weapon, since it doesn't really take that long to clear FCoB(if you're decent), whereas a fully upgraded Zeta relic, especially for someone starting from scratch, takes several hundred hours of time, even with average RNG.

I suppose you can say that, "it's not your my fault you have bad RNG", or, "this game's RNG has nothing on *insert random game here*", but it doesn't change the fact that relics are huge, boring grind, while FCoB is at least interesting.