In the 30 minutes since you read my post?!? Good one.
For the record I’ve played as a goalkeeper (still do, in a different sport) so know a bit about goalkeeping technique. Onana does have an unconventional technique but loads of excellent keepers don’t have conventional technique. And keepers with brilliant technique can be lacking in other areas (bravery, reflexes, athleticism etc) There’s more than one way to keep the ball out of the net and all available stats confirm that Onana did a pretty good job at doing exactly that last season.
Which is not to ignore his howlers, especially in Europe. But we can (hopefully) put that down to a settling in period. Because he definitely did get more assured as the season went on.