Fair enough, I’ll hold up my hand and say I haven’t seen any of Oblak this season, but watched him a ton the past few years and he’s still my #1, regardless of half a season’s form.
As for the De Gea take, I’ll stick by my take. Name me 3 better shot stoppers in Europe who have decent distribution (which he 100% does) that play for a top side.
Mate, De Gea is literally in the 1st percentile among top 5 goalkeepers for touches per 90. He is among the very worst keepers on the ball in Europe. He's also in the 4th percentile of defensive actions outside the box and 11th for cross collection.
He's still an excellent shot stopper but he is exceedingly poor at much of what the modern game demands from goalkeepers.
It's a fair point on Oblak's shot stopping - his track record speaks for itself and Atleti have had systemic issues / significant CB injury problems. The wider problem though is that he is from more or less the same mold as De Gea - he's also pretty poor on the ball and tends to be a bit more conservative with his positioning (though granted, Atleti's playstyle undoubtedly has something to do with this).
Regarding your question, I'm not sure there are 3 shot stoppers at top clubs who are better at that particular skill than De Gea (though to be fair there certainly are a fair few who are more consistent year over year). But that's not the end all be all of modern goalkeeping - preventing opponents from shooting by being proactive and reducing the effectiveness of opposition pressing by providing a passing option are absolutely core principles for the most elite teams.
So whilst again I'd agree with your take that De Gea is an elite shot-stopper, I again think you'd be extremely hard-pressed to find a top side willing to swap their keeper for De Gea.