Guess what - the game wants to stamp out these types of challenges where its studs into someones leg, with intent or not. He's not allowed to do it. More consistency would be good, the photo above with the villa player should get the same penalty as Holgate.
As for intent - I think Holgate could have avoided it, I don't think he needed to have gone to ground.
He could have cleared the ball naturally and stayed on his feet. I don't know why he dived in to be honest.
I'm still not sure it's a red card though. The tackle from West Ham later on yesterday was arguably worse and wasn't even a yellow.