Beppe and Paratici made a series of what were, in hindsight, brilliant transfers that summer, but no one had any idea that a washed up Pirlo would be the best CM in football in 2011-12, no one had any idea that Vidal would go from very good CM to top 5 CM in football. No one had any idea that's Lichtsteiner would turn into a WC RB, and Barza would become a WC CB. No one had any idea that an attack led by Matri and Vucinic could compete with Milan's Zlatan, Napoli's Cavani, Inter's Milito, etc. Beppe and Paratici brought in half a team between January 2011 and Summer 2011 mercatos. Without spending more than like 20m on any single player. And pretty much every Juve fan's best hope was for a CL spot because of this.
Now, some of those above things may have happened with any decent coach... a couple of them. And we may have finished in a CL spot. But for Conte to turn all those unknowns into gold that season and go undefeated was an absolute masterpiece of coaching, both tactically and motivationally.
You can find some of his personality traits obnoxious, some of his statements quite ridiculous, his later stubbornness infuriating at times... but downplaying the incredible things he achieved in his 3 years as coach here is beyond stupid.