It's funny because though it might not seem this way, I think everyone basically agrees

All of us want to see Suarez do well at the club and nobody wants to see him dive. It's how people are making the point that is the difference. Some people feel a deep sense of injustice at the treatment he's come in for from some quarters (the FA, referees, the media, other supporters etc.) and that makes it hard, impossible perhaps, for them to openly criticise his on-pitch antics. That's not helped by the fact that those criticising him for diving also criticised him during the Evra affair. So, there is a tendency to play down the diving and emphasise the injustice.
For me, though, there is no need to conflate the two issues. You can your express disapproval of diving and associated antics without seeming to defend those actions by invoking the Evra affair, the bias of the media etc. or by asking follow up questions such as "well, if he's getting kicked and stamped on without any action by the referee, what do you expect?". That's tantamount to saying that diving is an "understandable" reaction in the circumstances, and that hardly comes comes across as an unambiguous admonition. Cheating, which is what diving is, is something I feel we should be clear about and that message is obscured if conflated with other issues like the Evra affair, which are issues in their own right.