#1. Seth Rollins and not Roman Reigns is the #1 guy in WWE
Ever since Roman Reigns announced that he had leukemia, WWE made a huge change in plans and not knowing when or if Roman Reigns would return, they went with the right choice and picked Seth Rollins to be the next top star in WWE.
He defeated Brock Lesnar for the Universal Championship at WrestleMania 35 and that seemed to be his coronation, but Lesnar won it back at Extreme Rules after his MITB cash-in.
A top AEW star just called one of his colleagues 'spoiled' and 'narcissistic' HERE.
Since Shane McMahon did away with automatic rematches, Seth Rollins had to earn his spot. One thing that WWE unintentionally made clear is that Seth Rollins has replaced Roman Reigns as WWE's #1 full time star.
It's possible that knowing Reigns has a limited window, they won't be pushing him as much (though a few more world title runs can be expected). Perhaps he will be in an important role but not the main one. It seems as though he already has an exit strategy down the line with Hollywood.