This might seem silly but this was arguably one of the most impressive things about Infiltration’s play.
Infiltration constantly used Akuma’s forward and back dashes throughout all of his matches in top 8. He did this to set up the perfect spacing for himself at all time. This is an oft overlooked aspect of footsies (which Inf is amazing at). Daigo is often praised for doing the same thing with his Ryu, constantly resetting the exact distance he wants to be at to make his character most effective.
Infiltration is relatively minimalist when it comes to vortex mixups. I’m sure there are people on these forums that know more setups than him. He does, however, abuse all the fundamental aspects of Akuma’s play to their fullest. His footsies/demon punishes (both super and ultra!) are always locked down and make Akuma into a much more consistent character.
On top of that Infiltration is constantly displaying his willingness to blow you up with a DP (even without meter) so you have 1 more tool to worry about. Most Akuma’s aren’t willing to take those big risks because of his low health/stun.
TL;DR: Outside of mixups Infiltration just seems to play every matchup at exactly the right distance at all times, and shows that Akuma can still be played effectively with excellent fundamentals.