Desso pitch has nothing to do with it, mate. If you fall face first from a height, any pitch is going to be hard. Desso doesn't make a pitch materially harder. It merely makes the grass more stable and less likely to tear into big divots.
There is a social media witch hunt by bitter, envious people who are always out to belittle Kane or taint him him with any number of atrocities (and who always move the goalposts when any line of attack is proved to be ridiculous). These people have now settled on their latest campaign, screeching and wailing that Kane deliberately sets out to cause serious injury to random other players. It's absurd, of course. What would Kane's motivation be to do such a thing? The haters don't care about such awkward questions. The agenda is all that matters to them.
To be clear, I'm not including you in their number. But I do strongly disagree that Kane backs into an airborne player specifically to "knock that player out of control, making him land awkwardly". What actually happens is that Kane moves into position before the other player jumps and his intention is to get himself between that player and the ball so that he can either win the ball or win a free kick.
I do agree that he sometimes gets it wrong and that, on those occasions, he should be punished. But the reverse is true too. Sometimes the player taking a running jump recklessly endangers Kane as he legitimately takes up a position to win or protect the ball.