but you know exactly what they'll say: "We're in a team/family, we're all part of the same network", etc.

How familiar this is. We are family, friends, neighbors and blah blah. Somewhere I already saw it.
I will add a neutral feedback to everyone that all 10 people are on the team. And very often they are registered at the same companies. The rest is at the discretion of the managers.
Holy mowly fckn shit is that picture. This really made my day!

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@OP, You should give them a negative tag instead of neutral. They are obviously controlled by one user. The timing of the accounts posting here is very consistent.
You are just very nice to give them the benefit of the doubt.