My take from reading here and elsewhere is the divide runs mostly between those seeking mats and those seeking 4*s. The lower levels are dieing as healers keep the defense alive and arrows do their work.
Imagine, Revelate (calling your name only as an lcon not illwill), that you are a middle of the pack player in a middle of the pack alliance whose best players have been used and whose remainders are unable to beat defenses that are lower power and possibly missing a hero. And, then, some top 100 guy tells his story about why it is fair.
The crux of this is not the bar, but perceived fairness.
My personal experience is it works, but I have 30 4* or above, and tossed a few 3s in against lower defenses to save a better team. Half of my alliance cannot come to that level. But, they are having fun in alliance chat.
That is the key. My alliance has a strong leadet, and players having fun. It takes the sting out.
Previous alliances I have passed through just come yo work, kill a titan and go home. These wars just make life in a dysfunctional alliance worse. And that will drive them away.
Sorry I rambled away fro the bar, but I have to make the point alliances that do not have strong leadership are a problem SG can’t solve; therefor, it is the bar which must lighten up. And fewer stories of top 100s who like it.