Does Mascherano have a list of players he's severely injured? He has a history of bad tackles, a lot of tackles timed wrong or just done when it was unnecessary, but he isn't known for making careless, reckless tackles not even attempting to get the ball. If you want to take a player down, without the ball, to make a professional foul- that is one thing. But do you have to do it jumping onto their legs, with two feet or while scissoring through them? No, you do not.
You bring up the point of a viscous cycle but it leaves out the fact that one player really deserves it, while the other does not. It's all juvenile I suppose, until he seriously injures the next player. Then it's another case of "oh no, it's so unfortunate. lets hope it doesn't happen again". I've played the game, it doesn't take long to figure out who is a tough player and who is reckless with no disregard. I played against a neighboring towns traveling team and one of their defenders had broken one of our players legs TWICE, the same kid, in consecutive seasons....once playing outdoor, and once indoor. Earlier in the preceding season, he had caused a knee injury to our other rival neighboring team's best player. It's not coincidence.
If I had to choose between that defender getting injured, vs watching my teammate roll around the ground with his tibia protruding through his skin....I choose the defender. I have no sympathy for players like them.