You can blame Redknapp all the way home really, only a bad workman blames his tools and he just hasn't done enough/anything to keep them up.
He's bought in a few average players to try and make up for the dross at the club, he hasn't improved the style or even addressed the basic problems of the team being unable to do the basics of football. He has facilitated in the utter financial ruin of QPR though which will be interesting to watch.
The media on him when they end up going down will be entertaining to watch too!
The first sentence is nothing short of ridiculous. A manager can only do so much if he's got a **** squad. You could put Guardiola in charge of this squad and they'd still be ****.
He took over a side that hadn't even won a game and he's had the January transfer window to try to address the mess QPR found themselves in. He's far from perfect and has to take some accountability but the lions share of the blame should lay with the owners who set QPR on this road when they sacked Warnock (even though he is a ****), appointed Hughes and allowed him to spend a fortune on **** all.
As I said, I don't get the Samba signing and QPR are still a mess but they're less of a mess now than they were when he took over.