I will simplify my argument.
The foul was applying pressure with his knee to the ankle of ISA. It is a charge which is a subset of the law "Defender uses any part of their body forcefully to twist, bend or otherwise apply pressure to the limb or limbs of an opposing player in a way that involves an unacceptable risk of injury to that player."
My view on the law above is that it was written to cover the deliberate twisting of a knee, ankle, arm of a player, a kind of cover all that isn't included in the chicken wing or other pressure fouls.
It has been used here to charge a player for landing on top of another with his knee forcing pressure on the ankle. There was no other action that was illegal, just landing on a players ankle with his knee.
My point is that any tackle where a player lands on another and causes injury can fall into this category.
To put it even more simply - it is a foul because there was an injury (and the defender didn't prevent the injury), not a foul that caused an injury.