This is my take on it too.
Not taking anything away from him, but Eze, Wharton, Olise etc weren't unknown talents. A watch of the championship highlights show would have alerted you to their abilities.
We're also done the hard work now with the rebuild. And to a man, all of our players hold some value, so we shouldn't need to worry about not having the money to replace any departures.
It also feels like there has been a bit of a shift in the league. 2/3 years ago it was only really Brighton who seamed to have a 'scouting' network that excelled. (e.g. Mitoma, Caicedo, MacAllister)
Now Bournemouth, Villa, Forrest, Fulham seam to all be getting recruitment right. Its not scouting in the purest sense, but a real good mix of players from the championship, prem and abroad.
As a result we are seeing a really competitive midfield (and teams like Spurs and Utd struggling)