As I said we're on the same page in general but looking at the mainstream discussions I too stand by my comment that the "they play dirty" aspect is more of a side-note and sometimes are even welcomed if we're dealing with underdogs or the so-called divas (WC14..).
Sad result (no excuse but part of the reality): many players start to flip flop after being fouled because otherwise the ref wouldn't even lift a finger.
There has to be a balance between physicality and safety. I think that in some ways the game has become a bit biased in favor of the divers. On the other hand, we don't want to see players putting in reducers designed to deliberately injure their opponent, like they did in the 1970s.
But it's gotten to the point that occasionally players seem more interested in winning a foul than bothering to make a play, and that spoils the contest.
And yes, Neymar did sustain a major injury from that knee to the back - but we also know that
nearly every time he (or Ronaldo, Pepe, Dirty Ramos, Suarez, Busquets, etc etc) rolls around clutches his face or shin he has not actually sustained an injury. He is feigning, exaggerating, pantomiming...in short, cheating.
If any of you watch rugby, you will never look at the rolling on the ground and face-clutching in football the same way again.
Another point...remember when poor Eduardo, or Aaron Ramsey, or Steve Zakuani suffered their horrible leg breaks? Did they roll around on the ground? Heck no, they went down like a sack of potatoes and stayed down, with a look of terror on their faces. Because they were
actually badly injured. Even in Neymar's case, compare when he fractured a vertebra in his back in the 2014 WC to his more recent antics. Was he throwing himself about like a rag doll in 2014? Nope. Again, because he was really injured.
I don't want to belabor the point further, and I agree with you that dirty play should absolutely be frowned upon. But I do think it is fair for an inferior team to use a physical approach to disrupt a superior team's rhythm. It's a delicate balance, and frankly a subjective one. Referees have every right to see Neymar as the boy who cried wolf, and Neymar only has himself to blame for that.