You are right, that doesn't mean we should spend that type of money on him. He's a fantastic player but it's crazy money for a player who let's be honest, has done very little in football yet
He's done precisely enough to be evaluated in the bracket he's in - it's not some random figure, it is an evaluation based on merit plus age, plus potential and a few other things (marketability, being English etc.) .
I don't know how much you think you can get away with paying for such a package in 2020. It's just that fees are adjusted now and aren't any different to the premiums top youngsters of any era go through relative to those who haven't got the football world's interest piqued.
Separating Sancho for criticism over the international break makes absolutely no sense when proven PL superstars have had even worse games these past two performances. A myriad of reasons come to mind as to why that may be, not least of which self-preservation before the actual football starts over the next week or two. But, obviously further to that, if you set players up incorrectly, you cannot possibly expect them to go out of their way to bound over the problems outside of majors where many are prepared to do anything they possibly can to turn a game. You're just not going to get that in a glorified friendly.
On another note, if Sancho is on the verge of the biggest move of his life, you can forgive him for having his mind completely elsewhere at the minute. Staying fit and passing the medical obviously taking precedence over busting a gut and risking injury in a game of next to no worth.
Not an excuse for Sancho alone - although his circumstances are different - as you see all but the debutants holding back in these minor games.