I'm certain the Quantum can be ignored by any group or Guild that finds it too intensive. Reminds me a bit of the Settlements. The Settlements can be ignored 100% by any player, and only a very small disadvantage ensues from not having a few additional bits
(that for higher level players become redundant! I stored Yggrasil several months ago,,,)
Same thing with GE 5 players can skip it. no harm done unless in a top guild demanding it be completed in a race.
So a lot if the doom and gloom about Quantum is nonsense.