Let me try to provide another insight to back up my statement and my perspective:

I myself, and a few more players yesterday used all of our levemetes (100), attended every nodes every 24 hours, pop a lot of food, dying and respawning repetitively to spawn 8-10 S Ranks. I am not using Guildworks, nor am I against it (Remember, if it is not fun, you are doing it wrong). However, there are players that just afk, stand still, craft, and abuses Guildworks to notify them when an S Rank spawns. Did these people ever contribute? Nope. If I and some hunt leaders do not initiate a lead, will the S rank ever spawn by GW users? Yea, maybe the "good" GW users.