Because loot drama was only an issue when GM went "rogue" and downright stole the gear. But then it's not MLs fault, it's a person going ballistic with their power. The argument about ML causing drama is kind of an asspull in my opinion. Not that there was no loot drama. But because it wasn't caused by the loot rules specifically.
And I don't think anyone actually completely barred trials from getting loot. They were just lower prio cause, well, they're trials. Same extended to people with low attendance.
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People seriously need to readjust their evalutaion of what mid tier is. Statistically speaking, that would be a guild that's half way through heroic at this point. That's mid tier. Even a single kill in mythic would already bring you above that "mid tier".