I like Alex too. He's the islander most like the people I know of that age. If it's true that he was headhunted and went in for the adventure, having never seen the show, then he's doing brilliantly.
I can't dislike him for not tanning, for not using the right suncream at all times, for not finding true love in the eight weeks he was given, for not being grateful and/or pretending with Alexandra or for any of the other daft reasons he's been criticised on here.
I personally don't recall seeing any arrogance or patronising behaviour but, if he has done that, it's a lot milder than the behaviour we've seen from most of the others.
And everyone in there loves him. It's not clever editing if they all come out and say it after they leave. Even people he argued with, like Ellie, spoke very highly of him.