They don’t specify in any way. This is supposition.
All they mention are pain points and unfortunate behaviors. Part of it is the initial starting conditions; however, this was a symptom of the illness.
If it was focused entirely on this point alone, the last change listed would suffice. Removal of queue numbers was targeting the method premades utilized to mass queue, which wouldn’t be necessary to implement in tandem with the tertiary change of tweaking the amount of people required to start.
They directly reference unfortunate behaviors, which isn’t in reference to the initial starting state. Is it a soft way of saying exploiting and being openly hostile to those Alliance not in premades.
From someone who has always played both factions, this change is obviously intended to impede a behavior that is exploitative and diminishing the quality of the game for everyone.