You've answered something I never asked. I'm not talking about how long it takes to earn a kuva weapon. Did I even say that was a problem? No. Was it a question of knowledge and efficiency? No.
I'm talking about how first you have to grind the mods from relics, then you have to run multiple times to spawn the weapon you want, then the stats on the weapon also depend on RNG, then you've gotta kill the thralls and get the lich to spawn etc. Oh and not to forget the 20% chance for the ephemeras.
I hope the corpus queenpins are not like this.