Very interesting views.
But I think people are not really understanding the question at hand. I am not suggesting that he was not backed financially in the transfer market (see first post), because he was to a certain degree. Maybe not as much as he liked, but still a significant amount spent. And with regards to the flop buys, we do not know whether that was because they were genuinely terrible, or whether they downed their tools and could not deal with Jose's demands - leading to poor performance.
SAF also had poor buys remember - Bellion, Bebe, Kleberson, Djemba-Djemba, Miller, Veron (arguable), De Laet, Obertan, Powell, Buttner, Taibi, Tosic.. you get the idea. So arguing along the lines of his poor buys in a 3 year period is questionable, as he also brought in Zlatan (free) and Lindelof and revitalised Shaw with the hairdryer - and arguably this has worked.
The devil is always in the detail. When you look at his two most impressive stints, (I would argue this was Porto and Inter), the players completely submitted to him and they won everything with a moderately talented squad (and they bloody loved him). He left Porto because he was going to a bigger club, and he left Inter because Italian media basically hounded him. Football was not the most sexy, but it was not terrible either. Inter beat Barcelona (who were amazing) to the Champions League title.
You see Jose is the devil, he comes to you and offers you success, but at GREAT cost. It's whether you are willing to go all the way with him and trust him 100% or not. Everything else is irrelevant in my view, until the end of his contract. You give him X number of years, and submit to his authority as a club and go to war with him as your leader. Then remove him at the end of his tenure if you do not think he is for you. But don't bail out midway because some of the players are p***ies and not willing to graft and spend too much time on Instagram. The players need to know he is the boss and the club backs him as the boss, and they will be sold if they do not turn up.
I always felt he wanted to do what he did at Inter with us. A mix of maybe not the best players, but absolute warriors who would die for him and work in a system that just can beat anyone on their day. Pity we did not see this to the very end.