my 2 cents:
if whatshisface really was fired/demoted/punished because of those exact words, then this is worrisome. As long as his opinion is based on a certain objectivenes and whichever criticism he offers is purely fact related and not ad hominem, having a person who is commited enough to speak his mind even if he knows the vast majority will think differently or even antagonize him for it, is incredibly valuable, not only for barca, but for any institution really. To punish this guy for what basically amounts to "commiting blasphemy" is really something i would have expected somewhere around the vicinity of ronaldo, not us.
And on the debate of what the guy said: For me there is a clear distinction between talent/skill/magic and playing level. The former is attached to the individual player and apart from the improvements he makes for himself by training, learning, etc basically constant (although it would make for an interesting debate whether it makes a difference for messi if he plays and trains for 10 years with an iniesta or let's say a hleb. geniuses tend to inspire each other after all). In the case of messi, his talent is of course ridiculously high.
Playing level however is something else, for me that's actual goals scored, assists given, dribbles made and all the other stuff found in the castrol index, performance under stress, clutch moments, impacts on a match etc. in short how "good" a player has been during a game, a season or competition or his career. And if the barca guy had this in mind when he said messi wouldn't be as good, then that is objectively true and not insulting at all. Of course his overall performance will be better when he plays at barca with xavi and iniesta than when he plays at stoke. in fact, saying the opposite, that with messi the result is the same, regardless if you put xavi or iniesta beside him or johnny slowfeet, would be disrespectful to xavi and iniesta. of course they make him play better.
Some people make it sound as if messi's level of play is like a natural constant. if that were the case, he'd be world champion right now, sorry for the polemics.