Load of rubbish, the lot of it, that's what that post is. Would we have crucified Roy had he sold Torres for Carroll at 35m? Of course! But we would not have crucified him for spending the money, however, which is what the OP implies. We would have done so because Roy Hodgson would not have even the faintest idea of how to utilize the player in any way other than hoofball, which would see us playing like Fat Sam's Blackburn, just with higher overheads and lower expectations. Such a signing by Hodgson would have seen the second coming of Leeds United's fall from grace.
We didn't let Kenny get away with it either. The OP may not have noticed it, but the fans' jury on whether Carroll was a worthwhile signing is very much still out. Most pundits applaud it, particularly ex-LFC players (gee, didn't see that coming), but no one has actually said, "Carroll is worth every penny of that 35m". No one. Not even Kenny himself. That's worth bearing in mind before one decides that in the eyes of the fans Kenny can do no wrong.
Of course, one must also remember that he's the King for a reason. His experience in winning England's top flight both as a player and as a manager is second to none; not even Fergie has won the title as often. On the other hand, Hodgson won less than a handful of minor leagues more than two decades ago, and has brought nothing to the Premier League other than a way for his clubs to leave it. There is a vast gulf between the quality of these two managers, so please excuse us for being able to spot the lame duck, and for being unsurprised that he failed so miserably.
But we fans didn't make him fail - he did that all by himself, buying 5 poor players out of 6, with the one signing that seemed utterly against his type (Meireles) being the only one who has shown any promise. And yes, we saw that coming too, though we expected Joe Cole to have done better, so it's ironic Roy distanced himself from that particular signing, meaning he FAILED UTTERLY with 4 out of 4 signings that were definitely his. Even in the nightmares of the most passionate Rafa-hater does no one do worse than that.
Even if Carroll is a failure, at least Kenny got us to play football again, and with the help of the new owners banished the off the field antics that were ruining this club. Roy Hodgson was never going to succeed in such tasks, even had we all supported him the way emp did, because he was utterly out of his depth and thought he could somehow lower the expectations of a club that refuses to be allowed to fail.