Please look at this collection of
Pogba highlights vs Villa. Right foot / left foot pinpoint short/long passes at different speeds, disguise, vision to spot any attacking situation before it develops, worldie goals from inside and outside the box, surges with speed and power past other players while dribbling past them, dribbling out of tight spots with 3 markers, holding off people with strength, defensively winning tackles and headers, engine for days.
I can't think of another player in history, who could do all these things. Amongst midfielders, Charlton, Hoddle, Yaya Toure, Gascoigne, Socrates, Platini, Matthaus, Scholes, Iniesta/Xavi, Gerrard/Lampard, even Maradona had some of these qualities, but no one had all of them. And this is Pogba's main problem, that he can do everything so well that when you play him at one position, there are always other positions where he could clearly be better utilized. The only position I can't imagine him being the best is goalkeeper but he would be the best centre-half at our club, the best striker, if he cared to play there.
Pundits like Keane and Gary Neville, who didn't have an iota of Pogba's capabilities but were vocal, hard-working and lucky to play surrounded by much better players, go on incessantly about Pogba's attitude. However, think about it - would you want to try if all the great work you did and passes that you played were squandered by the likes of Pereira/Lingard/Lukaku/Fellaini/even young Rashford, the team you played in shipped goals because of the likes of Smalling/Jones/Rojo and the coaching was done by overestimated individualists who wanted their own stamp on the team like Mourinho (and LvG but Pogba never played with him). Keane and Neville were useful lieutenants for SAF to deploy who say Pogba isn't a leader, but true leadership requires people to stand up and speak out even when it hurts. Who else would have the gumption to say Utd should "attack, attack, attack" when having to play in a soul-destroying (it was certainly horrendous to watch) Mourinho 1-1 draw against Southampton in 2018?
Football is a team sport and Pogba, like all supremely talented players, needs a team for him to be interested. For France in the WC he had that with Mbappe, Griezmann, Dembele, Kante, Varane and a good defence. He could see that Mbappe (even Dembele then) was the kind of talent that could match his, and could learn from. He hasn't had that at Utd for years but now Martial and Rashford are starting to look like they are absolutely top-drawer, Bruno is the Modric to his Kroos, the defence is not terrible and Greenwood (and Sancho if he joins) may possess a talent on the level of his own and Utd are looking like a team he can grace.
Messi would have been a wasted player, a Matt Le Tissier or a Hatem Ben Arfa or a Dmitri Payet, if he had been in a team like Man Utd has been for the past 7 years. Now, Pogba now sees a team that could be worthy of his supreme talents. He has wasted some of the best years of his footballing life in this dross - he won't get those back - but this maybe a chink of light at the end of what has been a very long tunnel.