Everything else you've said is well-argued, but this simply isn't true. MApp came in on 4th July, only 8 days before his first preseason match. He inherited a shell of a squad and had less than a month to put a squad together.
There have been a lot of MApp/KR comparisons, but I don't think their situations correlate. When MApp came in, so did a new owner and new managing director. There was a complete overhaul of the club from top to bottom, and a recruitment team had to be sourced quickly. Faz was only appointed two weeks before our first league game.
KR has had something that MApp didn't have - time. When KR arrived, he did a decent job to keep us up (I don't think our squad was as bad as everyone was saying). When he came into the building we already had a coaching setup, scouting, recruitment, a managing director, and an owner who had had a month or two to settle down. KR had the whole summer to fill the holes in the squad and build a proper side - but despite bullishly saying all his business would be done early, we were signing players who were not fit and hadn't had proper pre-season with us.
In terms of results, yes MApp's weren't great to begin with, but everyone could recognise what he was trying to do - even though results weren't going our way we played with a clear style, and we were getting better at game-by-game. With KR, there is no master plan. He doesn't take responsibility for anything, it's always someone else's fault. With App you always felt like he knew his side was a work in progress - he was patient so we were too. KR is anything but patient.