This is so true. And it's not a dig at Ole at all.
Sancho was ready for the PL when he left. Foden was ready well before he started playing a lot. Pogba was ready for much more minutes than he got which is also why he left.
Premier League teams have a habit of going with tried and tested players regardless of their form.
Not totally bought by this. In Germany, there are definitely similarities to the English game, but you don't have as many top clubs as you do in the EPL. Bayern and Dortmund are definitely up there with the best the EPL has to offer, arguably better, but after that you're looking at sides that would struggle to finish in the top half in all honesty. Add to that the amount of exposure and scrutiny you come under in the Premier League, along with the financial impacts of a bad season are potentially groundbreaking for many clubs, and it's never as simple as just letting players go out there and play to their talents.
There is so much more required to perform at a high level in the EPL other than talent alone. The Bundesliga is a great option for young English players to develop as there are clear similar footballing mentalities and ethoses, with far less pressure on their shoulders.
I think it's impossible to make the claims you have about the readiness of Sancho, Foden and Pogba. Foden is exactly where he would want to be at this point in his career, so you would have to say he's been handled well by Pep who - during that same time - has consistently brought in trophies. At City, going into the 17/18 season, Sancho was behind the pecking order of Sane, Sterling, Jesus, Silva (x2), De Bruyne, with an undroppable Aguero leading the line. He was never going to get many minutes then. He was 17 at the start of the season. Pogba probably could have had more minutes during meaningful periods that season, but if anyone was the master at bringing through youth players for us, it was SAF. If he didn't think he was ready for the EPL, he wasn't ready.
Also, in the tweet you've shared, having watched Hudson-Odoi for Chelsea this season it's clear he's not ready for a regular starting place. He probably should have left a season or so ago.