Is plat really that toxic?

So during my placements I got matched with plat players somehow, and quite literally all the games I had with them wanted to open and were flaming too much. The jump in ego is so massive between gold 1 and plat 5 that I might prefer to stay in gold 1 when it comes to that. Why are they so toxic, out of all the ranked tiers I have been in, this is by the far most toxic.
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