I've not 'singled out' Ederson, and I've not claimed to have 'infinite wisdom'.
Anyone with any knowledge of coaching or having actually played the game, can see that Ederson's weak area is basic goalkeeping skills.
For example; he's a poor shot stopper, his positioning could be a lot better, and he doesn't dominate his six-yard box in dead ball situations.
Ederson and our goalkeeping coaches need to have regular long sessions on the basics to improve his all-round game.
We've got a perfectly capable second keeper in Ortega. He should be given a few games if only to make Ederson sit up and realise that he's not guaranteed first choice.
We have too many fans who jump to the defence of the indefensible. We all know that Ederson is ideal for Pep's style of play, but some (quite a few actually) seem to realise that he could be a lot better if he worked on the basics.
Criticism doesn't necessarily mean 'get rid', it can also mean 'get better'. That's what we should all want.