#1 Controversy! And it creates cash

Taking the belt away from Jericho so quickly has the potential to create a number of different responses from different members of the audience. Outrage. Excitement. Joy. And so on, and so forth.
Some fans, whether they're fans of Jericho or not, are going to get upset because AEW spent so much time and effort building him up and put him over a young guy who has the potential to be one of the top guys in AEW for years to come.
Why not just give Page the title immediately, and skip the step of putting it on Jericho first? Why "hot potato" the title? That makes it so unimportant! It makes it look cheap! We thought this was supposed to be different from WWE!
But, just like people who complain about the shows they watch, wrestling or otherwise, they continue to watch. That would be the case with this set of fans, almost guaranteed.
Others, however, would see this as a really bold move from the upstart company. It's exciting. As stated earlier, it sets the stage for AEW to be a promotion that goes for the unpredictable.
The people who get excited by it might not feel like this specific moment would be especially controversial, but it sets them up to expect that something different could happen in the future. Once the precedent is set, it allows AEW to get away with more and more as time goes on.
Finally, the set of people who would feel joy for a Jericho title loss may feel that way for a couple of reasons. One, there's a large set of individuals who think putting the title on him was a bad idea in the first place.
Controversy has already been created among that group. Giving them what they want (anybody but Jericho, for many) turns that controversy into a joyous occasion, and that makes people want to give you money to continue seeing things like this moving forward.
The other set of joyous individuals are feeling that way because even though they may not necessarily extremely upset about a Jericho run as champion, they were really hoping that AEW would get behind someone newer and younger as their top guy at the beginning.
They may be frustrated and worried that AEW could be going in the wrong direction. You have those people hooked, but they might let go of the bait. Reel them in by doing a title change. The initial spark of controversy, in this case, doesn't become full-blown chaos, but it does create cash.
Becky Lynch has been challenged HERE.