Probably so your own mon won't KO you all the time with EQ.Earthquake and scald are straight up not there. Why the ground pound shockwave wasn't used to make EQ is anyone's guess.
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I'll check the doc, but I'm pretty sure no spread move is going to make it or function the same because of that, and it seems very short-sighted if it's like that.
BLESSscald are straight up not there.