Because if they questioned every manager on every silly prediction they made, they'd be there all day
Plus saying someone has the potential to be like someone else good doesn't mean they will end up being like them. I don't think there is an argument to be made that journalists placate Wenger.
Trouble is we're not asking them to ask all managers, we're asking them to ask a guy who's been underachiving for over a decade and is still convinced he's right and everyone else is wrong. Wouldn't hurt to push him once in a while, surely his holier than thou attitude must grate.
Moreover not a lot of manager come out with sh*t like this, that was totally ridiculous, which is quite often the case with him, he comes out with some corkers.
After so long without delivering, a few tough questions isn't unreasonable, sick and tired of the same questions noone wants to know the answer to, he's boring as it is so let's raise the bar and ask him so difficult questions to make his interviews seem less mundane at least.