I think that is unfair, he gets a huge amount of credit from both sides of the debate for doing that. Imagine if we'd gone into that first season with just Kone and Jelavic as the options - him getting Lukaku over the line avoided that doomsday scenario.
He's brought in some cracking players - Barry, Lukaku, Del, Lennon. I'm no McCarthy fan but he was exceptional first season. But there has also been some serious dross - Kone, Alcaraz, McGeady, Cleverley, and he doesn't seem hugely confident in this new lad he brought in so far. Funes Mori is beginning to be targeted by the opposition increasingly as he has some massive holes in his defensive game, but he isn't quite as bad as the gruesome aforementioned four .
Overall I'd say his decision to put £28m down - a huge chunk of his overall outlay - has been massively vindicated. Sadly, we are not going to capitalise on his 25 goals, we are going to survive on them.