I don't know the snipers you have played with obviously but not every sniper is bad. Some prefer to be in the thick of it and others don't, to each their own
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You can be out of "the thick of it" without being half a mile away sniping ontop of some small mountain.
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Again that's their play style and it mirrors real life tactics. It may not be needed in a game but that's just the way some prefer it