Has anyone run into toxic 4man premades?

Just curious as to how many people have actually experienced this before, I literally just got two in a row on the rotating game mode. The first was semi-understandable, I was playing like shit, the second they just didn't like the pick and attempted to incite the enemy team to report me just for picking it. I just want to see if this is a wide spread problem of it was just really bad luck on my end.
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