When he's playing as a winger, I don't think you can call people "Jonas slaters" for noticing he's not great at being one. We've mostly matched up 4-4-2 this season, with Jonas operating as winger, which isn't good for him or us. I wouldn't call people "Cisse slaters" if Pardew decided he'd be playing at RB and didn't do it very well. In my opinion, the only time he should be anywhere near a 4-4-2 is when we are struggling for LB cover or Pardew is concerned about a specific RW threat, otherwise the formation is a bit stodgy and ineffective attacking-wise.
Every fan is aware of his strengths, and they point specifically to DM/WB than in wing-play. Players like Jonas allow "tactical flexibility" (the new buzz word all fans must say to win nods of approval from their mates apparently), but if he's going to play it should only be because he's more suited to the role than whoever else is in contention. At present, if Pardew insists on 4-4-2 against West Ham say, I'd suggest Ferguson needs to start. Against Liverpool, Jonas will probably be more useful to counter Suarez et al.