they are part of the game, but tackles(i assume not seen this one yet) like that have a far far higher chance of injuring people, you see these tackles and everyone winces. Tackles like that have no place on the pitch and even if accidental, these are athletes the idea is to be in control of your movements. For instance if he slipped over rather than jump in, its an accident, but if he jumped in its reckless. I don't think we need to go massively overboard on punishment. Eduardo's tackle was incredibly high, very very reckless and flat out stupid.
Frankly I can't see why, Davies was it(?) wasn't red carded at the weekend, he did injure Clichy and it was a horrific tackle tbh, the absolute luck of the tackle was he didn't catch clichy flush on the front of his shin but caught the side and bounced off. however, if clichy's leg had been literally 2 inches further to the right(or left can't remember) then Davies would have caught him flush on the standing leg and almost certainly(considering his .... weight) have snapped his leg. Considering where it was, how he went in and how hard he went in when he was 1 in 10 chance of getting the ball, certain red.